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

[Bellavene]

Not quite the same but there is gradient option, you can set one part of it as transparent, then you will get one corner colored.