diff --git a/contour-A single objective study that suggests None as a categorical parameter-matplotlib.png b/contour-A single objective study that suggests None as a categorical parameter-matplotlib.png
index 3e5934392..3a4c4336f 100644
Binary files a/contour-A single objective study that suggests None as a categorical parameter-matplotlib.png and b/contour-A single objective study that suggests None as a categorical parameter-matplotlib.png differ
diff --git a/contour-A single objective study that suggests None as a categorical parameter-plotly.png b/contour-A single objective study that suggests None as a categorical parameter-plotly.png
index 60dddc918..1b354a842 100644
Binary files a/contour-A single objective study that suggests None as a categorical parameter-plotly.png and b/contour-A single objective study that suggests None as a categorical parameter-plotly.png differ
diff --git a/contour-A single objective study with 2-dimensional static search space-matplotlib.png b/contour-A single objective study with 2-dimensional static search space-matplotlib.png
index 3f12e2065..5b137cca2 100644
Binary files a/contour-A single objective study with 2-dimensional static search space-matplotlib.png and b/contour-A single objective study with 2-dimensional static search space-matplotlib.png differ
diff --git a/contour-A single objective study with 2-dimensional static search space-plotly.png b/contour-A single objective study with 2-dimensional static search space-plotly.png
index 3c4d7df23..825892f8d 100644
Binary files a/contour-A single objective study with 2-dimensional static search space-plotly.png and b/contour-A single objective study with 2-dimensional static search space-plotly.png differ
diff --git a/contour-A single-objective study with 3-dimensional dynamic search space-matplotlib.png b/contour-A single-objective study with 3-dimensional dynamic search space-matplotlib.png
index d9a5ce95b..0f1abc6bd 100644
Binary files a/contour-A single-objective study with 3-dimensional dynamic search space-matplotlib.png and b/contour-A single-objective study with 3-dimensional dynamic search space-matplotlib.png differ
diff --git a/contour-pytorch_simple.py in optuna-example-matplotlib.png b/contour-pytorch_simple.py in optuna-example-matplotlib.png
index fec1c816f..94483b42d 100644
Binary files a/contour-pytorch_simple.py in optuna-example-matplotlib.png and b/contour-pytorch_simple.py in optuna-example-matplotlib.png differ
diff --git a/contour-pytorch_simple.py in optuna-example-plotly.png b/contour-pytorch_simple.py in optuna-example-plotly.png
index 465069edd..a157127e3 100644
Binary files a/contour-pytorch_simple.py in optuna-example-plotly.png and b/contour-pytorch_simple.py in optuna-example-plotly.png differ
diff --git a/edf-A single objective study that suggests None as a categorical parameter-matplotlib.png b/edf-A single objective study that suggests None as a categorical parameter-matplotlib.png
index b09fb90b1..fcbc6ce51 100644
Binary files a/edf-A single objective study that suggests None as a categorical parameter-matplotlib.png and b/edf-A single objective study that suggests None as a categorical parameter-matplotlib.png differ
diff --git a/edf-A single objective study that suggests None as a categorical parameter-plotly.png b/edf-A single objective study that suggests None as a categorical parameter-plotly.png
index 6e8859b51..268590a37 100644
Binary files a/edf-A single objective study that suggests None as a categorical parameter-plotly.png and b/edf-A single objective study that suggests None as a categorical parameter-plotly.png differ
diff --git a/edf-A single objective study with 2-dimensional static search space-matplotlib.png b/edf-A single objective study with 2-dimensional static search space-matplotlib.png
index 480874362..81d574a8e 100644
Binary files a/edf-A single objective study with 2-dimensional static search space-matplotlib.png and b/edf-A single objective study with 2-dimensional static search space-matplotlib.png differ
diff --git a/edf-A single objective study with 2-dimensional static search space-plotly.png b/edf-A single objective study with 2-dimensional static search space-plotly.png
index 053fbc929..8a4b016d7 100644
Binary files a/edf-A single objective study with 2-dimensional static search space-plotly.png and b/edf-A single objective study with 2-dimensional static search space-plotly.png differ
diff --git a/edf-A single-objective study with 3-dimensional dynamic search space-matplotlib.png b/edf-A single-objective study with 3-dimensional dynamic search space-matplotlib.png
index d8eab40fd..de63c9c28 100644
Binary files a/edf-A single-objective study with 3-dimensional dynamic search space-matplotlib.png and b/edf-A single-objective study with 3-dimensional dynamic search space-matplotlib.png differ
diff --git a/edf-A single-objective study with 3-dimensional dynamic search space-plotly.png b/edf-A single-objective study with 3-dimensional dynamic search space-plotly.png
index 0c8d4d89e..f5fb8caeb 100644
Binary files a/edf-A single-objective study with 3-dimensional dynamic search space-plotly.png and b/edf-A single-objective study with 3-dimensional dynamic search space-plotly.png differ
diff --git a/edf-Two single objective studies with 2-dimensional static search space-matplotlib.png b/edf-Two single objective studies with 2-dimensional static search space-matplotlib.png
index 5ab36c444..50d840b69 100644
Binary files a/edf-Two single objective studies with 2-dimensional static search space-matplotlib.png and b/edf-Two single objective studies with 2-dimensional static search space-matplotlib.png differ
diff --git a/edf-Two single objective studies with 2-dimensional static search space-plotly.png b/edf-Two single objective studies with 2-dimensional static search space-plotly.png
index 8bd792989..0ecb99ff8 100644
Binary files a/edf-Two single objective studies with 2-dimensional static search space-plotly.png and b/edf-Two single objective studies with 2-dimensional static search space-plotly.png differ
diff --git a/edf-Two single objective studies with 3-dimensional dynamic search space-matplotlib.png b/edf-Two single objective studies with 3-dimensional dynamic search space-matplotlib.png
index 10a3d48ee..5d496584b 100644
Binary files a/edf-Two single objective studies with 3-dimensional dynamic search space-matplotlib.png and b/edf-Two single objective studies with 3-dimensional dynamic search space-matplotlib.png differ
diff --git a/edf-Two single objective studies with 3-dimensional dynamic search space-plotly.png b/edf-Two single objective studies with 3-dimensional dynamic search space-plotly.png
index 490b11773..1fd30e092 100644
Binary files a/edf-Two single objective studies with 3-dimensional dynamic search space-plotly.png and b/edf-Two single objective studies with 3-dimensional dynamic search space-plotly.png differ
diff --git a/edf-pytorch_simple.py in optuna-example-matplotlib.png b/edf-pytorch_simple.py in optuna-example-matplotlib.png
index e24db28c7..6f55a0076 100644
Binary files a/edf-pytorch_simple.py in optuna-example-matplotlib.png and b/edf-pytorch_simple.py in optuna-example-matplotlib.png differ
diff --git a/edf-pytorch_simple.py in optuna-example-plotly.png b/edf-pytorch_simple.py in optuna-example-plotly.png
index aa653a20c..1745ddc47 100644
Binary files a/edf-pytorch_simple.py in optuna-example-plotly.png and b/edf-pytorch_simple.py in optuna-example-plotly.png differ
diff --git a/history-A single objective study that suggests None as a categorical parameter-matplotlib.png b/history-A single objective study that suggests None as a categorical parameter-matplotlib.png
index 772a38e0e..925b20c60 100644
Binary files a/history-A single objective study that suggests None as a categorical parameter-matplotlib.png and b/history-A single objective study that suggests None as a categorical parameter-matplotlib.png differ
diff --git a/history-A single objective study that suggests None as a categorical parameter-plotly.png b/history-A single objective study that suggests None as a categorical parameter-plotly.png
index 01dbc27ae..7373eea28 100644
Binary files a/history-A single objective study that suggests None as a categorical parameter-plotly.png and b/history-A single objective study that suggests None as a categorical parameter-plotly.png differ
diff --git a/history-A single objective study with 2-dimensional static search space-matplotlib.png b/history-A single objective study with 2-dimensional static search space-matplotlib.png
index 47f032fd8..b61eb943a 100644
Binary files a/history-A single objective study with 2-dimensional static search space-matplotlib.png and b/history-A single objective study with 2-dimensional static search space-matplotlib.png differ
diff --git a/history-A single objective study with 2-dimensional static search space-plotly.png b/history-A single objective study with 2-dimensional static search space-plotly.png
index ab2a6dcc0..387446297 100644
Binary files a/history-A single objective study with 2-dimensional static search space-plotly.png and b/history-A single objective study with 2-dimensional static search space-plotly.png differ
diff --git a/history-A single-objective study with 3-dimensional dynamic search space-matplotlib.png b/history-A single-objective study with 3-dimensional dynamic search space-matplotlib.png
index f83021084..4ccd851e3 100644
Binary files a/history-A single-objective study with 3-dimensional dynamic search space-matplotlib.png and b/history-A single-objective study with 3-dimensional dynamic search space-matplotlib.png differ
diff --git a/history-A single-objective study with 3-dimensional dynamic search space-plotly.png b/history-A single-objective study with 3-dimensional dynamic search space-plotly.png
index c96adc009..9a915df5f 100644
Binary files a/history-A single-objective study with 3-dimensional dynamic search space-plotly.png and b/history-A single-objective study with 3-dimensional dynamic search space-plotly.png differ
diff --git a/history-Two single objective studies with 2-dimensional static search space-matplotlib.png b/history-Two single objective studies with 2-dimensional static search space-matplotlib.png
index eaf5de89e..7f5118fd7 100644
Binary files a/history-Two single objective studies with 2-dimensional static search space-matplotlib.png and b/history-Two single objective studies with 2-dimensional static search space-matplotlib.png differ
diff --git a/history-Two single objective studies with 2-dimensional static search space-plotly.png b/history-Two single objective studies with 2-dimensional static search space-plotly.png
index 203f4a011..7d2abe8ac 100644
Binary files a/history-Two single objective studies with 2-dimensional static search space-plotly.png and b/history-Two single objective studies with 2-dimensional static search space-plotly.png differ
diff --git a/history-Two single objective studies with 3-dimensional dynamic search space-matplotlib.png b/history-Two single objective studies with 3-dimensional dynamic search space-matplotlib.png
index 5708cdcf9..2eeb2817b 100644
Binary files a/history-Two single objective studies with 3-dimensional dynamic search space-matplotlib.png and b/history-Two single objective studies with 3-dimensional dynamic search space-matplotlib.png differ
diff --git a/history-Two single objective studies with 3-dimensional dynamic search space-plotly.png b/history-Two single objective studies with 3-dimensional dynamic search space-plotly.png
index 5b5cd3ea7..72d140772 100644
Binary files a/history-Two single objective studies with 3-dimensional dynamic search space-plotly.png and b/history-Two single objective studies with 3-dimensional dynamic search space-plotly.png differ
diff --git a/history-error_bar=True-Two single objective studies with 2-dimensional static search space-matplotlib.png b/history-error_bar=True-Two single objective studies with 2-dimensional static search space-matplotlib.png
index aa0fb5b89..14a38bd70 100644
Binary files a/history-error_bar=True-Two single objective studies with 2-dimensional static search space-matplotlib.png and b/history-error_bar=True-Two single objective studies with 2-dimensional static search space-matplotlib.png differ
diff --git a/history-error_bar=True-Two single objective studies with 2-dimensional static search space-plotly.png b/history-error_bar=True-Two single objective studies with 2-dimensional static search space-plotly.png
index d4d3dcf51..c7a0e0e1b 100644
Binary files a/history-error_bar=True-Two single objective studies with 2-dimensional static search space-plotly.png and b/history-error_bar=True-Two single objective studies with 2-dimensional static search space-plotly.png differ
diff --git a/history-error_bar=True-Two single objective studies with 3-dimensional dynamic search space-matplotlib.png b/history-error_bar=True-Two single objective studies with 3-dimensional dynamic search space-matplotlib.png
index 946e02018..0cb5c699a 100644
Binary files a/history-error_bar=True-Two single objective studies with 3-dimensional dynamic search space-matplotlib.png and b/history-error_bar=True-Two single objective studies with 3-dimensional dynamic search space-matplotlib.png differ
diff --git a/history-error_bar=True-Two single objective studies with 3-dimensional dynamic search space-plotly.png b/history-error_bar=True-Two single objective studies with 3-dimensional dynamic search space-plotly.png
index 26dee0afa..00ea5afb4 100644
Binary files a/history-error_bar=True-Two single objective studies with 3-dimensional dynamic search space-plotly.png and b/history-error_bar=True-Two single objective studies with 3-dimensional dynamic search space-plotly.png differ
diff --git a/history-pytorch_simple.py in optuna-example-matplotlib.png b/history-pytorch_simple.py in optuna-example-matplotlib.png
index bf026b0b2..252d8cdfb 100644
Binary files a/history-pytorch_simple.py in optuna-example-matplotlib.png and b/history-pytorch_simple.py in optuna-example-matplotlib.png differ
diff --git a/history-pytorch_simple.py in optuna-example-plotly.png b/history-pytorch_simple.py in optuna-example-plotly.png
index 8c8dbe76b..a7e6879f7 100644
Binary files a/history-pytorch_simple.py in optuna-example-plotly.png and b/history-pytorch_simple.py in optuna-example-plotly.png differ
diff --git a/importance-A single objective study that suggests None as a categorical parameter-matplotlib.png b/importance-A single objective study that suggests None as a categorical parameter-matplotlib.png
index 7342d733a..081f49dfe 100644
Binary files a/importance-A single objective study that suggests None as a categorical parameter-matplotlib.png and b/importance-A single objective study that suggests None as a categorical parameter-matplotlib.png differ
diff --git a/importance-A single objective study that suggests None as a categorical parameter-plotly.png b/importance-A single objective study that suggests None as a categorical parameter-plotly.png
index 2a6912435..36964c85c 100644
Binary files a/importance-A single objective study that suggests None as a categorical parameter-plotly.png and b/importance-A single objective study that suggests None as a categorical parameter-plotly.png differ
diff --git a/importance-A single objective study with 2-dimensional static search space-matplotlib.png b/importance-A single objective study with 2-dimensional static search space-matplotlib.png
index 9ecb2f589..995e970af 100644
Binary files a/importance-A single objective study with 2-dimensional static search space-matplotlib.png and b/importance-A single objective study with 2-dimensional static search space-matplotlib.png differ
diff --git a/importance-A single objective study with 2-dimensional static search space-plotly.png b/importance-A single objective study with 2-dimensional static search space-plotly.png
index cd33d3e32..cb871adf1 100644
Binary files a/importance-A single objective study with 2-dimensional static search space-plotly.png and b/importance-A single objective study with 2-dimensional static search space-plotly.png differ
diff --git a/importance-A single-objective study with 3-dimensional dynamic search space-plotly.png b/importance-A single-objective study with 3-dimensional dynamic search space-plotly.png
index 55e6dd169..868906a2c 100644
Binary files a/importance-A single-objective study with 3-dimensional dynamic search space-plotly.png and b/importance-A single-objective study with 3-dimensional dynamic search space-plotly.png differ
diff --git a/importance-pytorch_simple.py in optuna-example-matplotlib.png b/importance-pytorch_simple.py in optuna-example-matplotlib.png
index 0dc8d6784..6a8696dd6 100644
Binary files a/importance-pytorch_simple.py in optuna-example-matplotlib.png and b/importance-pytorch_simple.py in optuna-example-matplotlib.png differ
diff --git a/importance-pytorch_simple.py in optuna-example-plotly.png b/importance-pytorch_simple.py in optuna-example-plotly.png
index 3afc4a95b..285995eb9 100644
Binary files a/importance-pytorch_simple.py in optuna-example-plotly.png and b/importance-pytorch_simple.py in optuna-example-plotly.png differ
diff --git a/intermediate-Study that has no trials-plotly.png b/intermediate-Study that has no trials-plotly.png
index 2a6899568..53e54c4af 100644
Binary files a/intermediate-Study that has no trials-plotly.png and b/intermediate-Study that has no trials-plotly.png differ
diff --git a/intermediate-Study that has only failed trials-plotly.png b/intermediate-Study that has only failed trials-plotly.png
index 2a6899568..53e54c4af 100644
Binary files a/intermediate-Study that has only failed trials-plotly.png and b/intermediate-Study that has only failed trials-plotly.png differ
diff --git a/intermediate-Study that is pruned after 'inf', '-inf', or 'nan'-plotly.png b/intermediate-Study that is pruned after 'inf', '-inf', or 'nan'-plotly.png
index e30b852b9..7a75ed4a9 100644
Binary files a/intermediate-Study that is pruned after 'inf', '-inf', or 'nan'-plotly.png and b/intermediate-Study that is pruned after 'inf', '-inf', or 'nan'-plotly.png differ
diff --git a/intermediate-Study with 1 trial-plotly.png b/intermediate-Study with 1 trial-plotly.png
index 45e5b9454..ef1c4000b 100644
Binary files a/intermediate-Study with 1 trial-plotly.png and b/intermediate-Study with 1 trial-plotly.png differ
diff --git a/intermediate-Study with only 1 trial that has no intermediate value-plotly.png b/intermediate-Study with only 1 trial that has no intermediate value-plotly.png
index 2a6899568..53e54c4af 100644
Binary files a/intermediate-Study with only 1 trial that has no intermediate value-plotly.png and b/intermediate-Study with only 1 trial that has no intermediate value-plotly.png differ
diff --git a/intermediate-pytorch_simple.py in optuna-example-matplotlib.png b/intermediate-pytorch_simple.py in optuna-example-matplotlib.png
index 1a95c23a3..30bddfcf9 100644
Binary files a/intermediate-pytorch_simple.py in optuna-example-matplotlib.png and b/intermediate-pytorch_simple.py in optuna-example-matplotlib.png differ
diff --git a/intermediate-pytorch_simple.py in optuna-example-plotly.png b/intermediate-pytorch_simple.py in optuna-example-plotly.png
index a560e3d88..83344b3ce 100644
Binary files a/intermediate-pytorch_simple.py in optuna-example-plotly.png and b/intermediate-pytorch_simple.py in optuna-example-plotly.png differ
diff --git a/parcoords-A single objective study that suggests None as a categorical parameter-matplotlib.png b/parcoords-A single objective study that suggests None as a categorical parameter-matplotlib.png
index e36006014..7f3306d38 100644
Binary files a/parcoords-A single objective study that suggests None as a categorical parameter-matplotlib.png and b/parcoords-A single objective study that suggests None as a categorical parameter-matplotlib.png differ
diff --git a/parcoords-A single objective study that suggests None as a categorical parameter-plotly.png b/parcoords-A single objective study that suggests None as a categorical parameter-plotly.png
index 3393a6e99..ddd387e14 100644
Binary files a/parcoords-A single objective study that suggests None as a categorical parameter-plotly.png and b/parcoords-A single objective study that suggests None as a categorical parameter-plotly.png differ
diff --git a/parcoords-A single objective study with 2-dimensional static search space-matplotlib.png b/parcoords-A single objective study with 2-dimensional static search space-matplotlib.png
index 64b9c7558..dbc63cb6f 100644
Binary files a/parcoords-A single objective study with 2-dimensional static search space-matplotlib.png and b/parcoords-A single objective study with 2-dimensional static search space-matplotlib.png differ
diff --git a/parcoords-A single objective study with 2-dimensional static search space-plotly.png b/parcoords-A single objective study with 2-dimensional static search space-plotly.png
index 991f0c8da..a846ae0e5 100644
Binary files a/parcoords-A single objective study with 2-dimensional static search space-plotly.png and b/parcoords-A single objective study with 2-dimensional static search space-plotly.png differ
diff --git a/parcoords-pytorch_simple.py in optuna-example-matplotlib.png b/parcoords-pytorch_simple.py in optuna-example-matplotlib.png
index 8798469f9..407b69f96 100644
Binary files a/parcoords-pytorch_simple.py in optuna-example-matplotlib.png and b/parcoords-pytorch_simple.py in optuna-example-matplotlib.png differ
diff --git a/parcoords-pytorch_simple.py in optuna-example-plotly.png b/parcoords-pytorch_simple.py in optuna-example-plotly.png
index bc7e7b15a..a3f894af0 100644
Binary files a/parcoords-pytorch_simple.py in optuna-example-plotly.png and b/parcoords-pytorch_simple.py in optuna-example-plotly.png differ
diff --git a/pareto-front-Multi-objective study with dynamic search space-matplotlib.png b/pareto-front-Multi-objective study with dynamic search space-matplotlib.png
index 0e35f94ee..10bee4aab 100644
Binary files a/pareto-front-Multi-objective study with dynamic search space-matplotlib.png and b/pareto-front-Multi-objective study with dynamic search space-matplotlib.png differ
diff --git a/pareto-front-Multi-objective study with dynamic search space-plotly.png b/pareto-front-Multi-objective study with dynamic search space-plotly.png
index c1b42c81b..09ed10735 100644
Binary files a/pareto-front-Multi-objective study with dynamic search space-plotly.png and b/pareto-front-Multi-objective study with dynamic search space-plotly.png differ
diff --git a/pareto-front-Multi-objective study with static search space-matplotlib.png b/pareto-front-Multi-objective study with static search space-matplotlib.png
index eb4167299..7aee65ff5 100644
Binary files a/pareto-front-Multi-objective study with static search space-matplotlib.png and b/pareto-front-Multi-objective study with static search space-matplotlib.png differ
diff --git a/pareto-front-Multi-objective study with static search space-plotly.png b/pareto-front-Multi-objective study with static search space-plotly.png
index f3cb051eb..e77ef9540 100644
Binary files a/pareto-front-Multi-objective study with static search space-plotly.png and b/pareto-front-Multi-objective study with static search space-plotly.png differ
diff --git a/slice-A single objective study that suggests None as a categorical parameter-matplotlib.png b/slice-A single objective study that suggests None as a categorical parameter-matplotlib.png
index 96c01c576..647a60f8e 100644
Binary files a/slice-A single objective study that suggests None as a categorical parameter-matplotlib.png and b/slice-A single objective study that suggests None as a categorical parameter-matplotlib.png differ
diff --git a/slice-A single objective study that suggests None as a categorical parameter-plotly.png b/slice-A single objective study that suggests None as a categorical parameter-plotly.png
index 55564ad64..c91646805 100644
Binary files a/slice-A single objective study that suggests None as a categorical parameter-plotly.png and b/slice-A single objective study that suggests None as a categorical parameter-plotly.png differ
diff --git a/slice-A single objective study with 2-dimensional static search space-matplotlib.png b/slice-A single objective study with 2-dimensional static search space-matplotlib.png
index 3afb7d26e..ea1bdc9f1 100644
Binary files a/slice-A single objective study with 2-dimensional static search space-matplotlib.png and b/slice-A single objective study with 2-dimensional static search space-matplotlib.png differ
diff --git a/slice-A single objective study with 2-dimensional static search space-plotly.png b/slice-A single objective study with 2-dimensional static search space-plotly.png
index 74f058197..54bc2261c 100644
Binary files a/slice-A single objective study with 2-dimensional static search space-plotly.png and b/slice-A single objective study with 2-dimensional static search space-plotly.png differ
diff --git a/slice-A single-objective study with 3-dimensional dynamic search space-matplotlib.png b/slice-A single-objective study with 3-dimensional dynamic search space-matplotlib.png
index c14907150..d67cf9429 100644
Binary files a/slice-A single-objective study with 3-dimensional dynamic search space-matplotlib.png and b/slice-A single-objective study with 3-dimensional dynamic search space-matplotlib.png differ
diff --git a/slice-A single-objective study with 3-dimensional dynamic search space-plotly.png b/slice-A single-objective study with 3-dimensional dynamic search space-plotly.png
index 9f3d4e5a0..959d1c155 100644
Binary files a/slice-A single-objective study with 3-dimensional dynamic search space-plotly.png and b/slice-A single-objective study with 3-dimensional dynamic search space-plotly.png differ
diff --git a/slice-pytorch_simple.py in optuna-example-matplotlib.png b/slice-pytorch_simple.py in optuna-example-matplotlib.png
index b2eebf64a..77d34b4b0 100644
Binary files a/slice-pytorch_simple.py in optuna-example-matplotlib.png and b/slice-pytorch_simple.py in optuna-example-matplotlib.png differ
diff --git a/slice-pytorch_simple.py in optuna-example-plotly.png b/slice-pytorch_simple.py in optuna-example-plotly.png
index a4552308e..341fab1f6 100644
Binary files a/slice-pytorch_simple.py in optuna-example-plotly.png and b/slice-pytorch_simple.py in optuna-example-plotly.png differ
diff --git a/timeline-A single objective study consuming time and the order of legends is different from the order of trials-matplotlib.png b/timeline-A single objective study consuming time and the order of legends is different from the order of trials-matplotlib.png
index 9c1a429f0..f5e13c55e 100644
Binary files a/timeline-A single objective study consuming time and the order of legends is different from the order of trials-matplotlib.png and b/timeline-A single objective study consuming time and the order of legends is different from the order of trials-matplotlib.png differ
diff --git a/timeline-A single objective study consuming time and the order of legends is different from the order of trials-plotly.png b/timeline-A single objective study consuming time and the order of legends is different from the order of trials-plotly.png
index b57ec20af..fb7aa3768 100644
Binary files a/timeline-A single objective study consuming time and the order of legends is different from the order of trials-plotly.png and b/timeline-A single objective study consuming time and the order of legends is different from the order of trials-plotly.png differ
diff --git a/timeline-A single objective study consuming time-matplotlib.png b/timeline-A single objective study consuming time-matplotlib.png
index 2a01bd3bd..9d27117f5 100644
Binary files a/timeline-A single objective study consuming time-matplotlib.png and b/timeline-A single objective study consuming time-matplotlib.png differ
diff --git a/timeline-A single objective study consuming time-plotly.png b/timeline-A single objective study consuming time-plotly.png
index 8201f7126..11d906875 100644
Binary files a/timeline-A single objective study consuming time-plotly.png and b/timeline-A single objective study consuming time-plotly.png differ
diff --git a/timeline-A single objective study that has no trials-plotly.png b/timeline-A single objective study that has no trials-plotly.png
index 9aa0cecb6..a9ccf6a59 100644
Binary files a/timeline-A single objective study that has no trials-plotly.png and b/timeline-A single objective study that has no trials-plotly.png differ