Single edge highlight color

[bin101]

Would be nice to be able to use a different highlight color for a single edge or parts of it to indicate the direction of new windows in yabai/aerospace.

Sth like this:

Image copied from here:
regolith-linux/regolith-desktop#529

[FelixKratz]

I like the idea. I would accept a PR for a new special color option that does this. Maybe it could be:
active_color=multi(left=<color>,top=<color>,right=<color>,bottom=<color>)
Should be a good issue to ponder a bit with the code.