Add theme checks for multiple OSes.

.github/workflows/lint.yml

@@ -3,11 +3,11 @@ name: Linters
 on: [push]
 
 jobs:
-  lint-versions:
+  lint-version-python:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ["3.10", "3.11", "3.12"]
+        python-version: ["3.11", "3.12"]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4
@@ -23,7 +23,7 @@ jobs:
       run: |
         scripts/lint.sh
 
-  lint-os:
+  lint-os-python:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]

.github/workflows/theme.yml

@@ -0,0 +1,26 @@
+name: Theme
+
+on: [push]
+
+jobs:
+  theme-python:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        python-version: ["3.10"]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v3
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        if [ "$RUNNER_OS" == "Windows" ]; then
+            pip install winrt-Windows.UI.ViewManagement winrt-Windows.UI
+        fi
+    - name: Checking our Python imports.
+      run: |
+        scripts/theme.sh