How to set background color for a own style

[blender advisors]

Hi!

Basicly my purpose is to use certain tabs as a sticky note.
Do you know how is it possible to change the whole background to yellow, but only for either an extension, or for a user defined style?

I don’t find such an option.

The background color in “Language -> Define your language” changes the background only under the letters.
Changing the global background color at Settings -> Style Configurator then changes the background everywhere, which is not good either.
Thanks a lot!
Jason