Custom themes for detached instruments

For visualisation purposes, I’d like the possibility to have the detached instrument editor window colored with an alternate theme/skin.
(Detached mode only.)

My suggestion is to put a primary theme and secondary theme option in the Preferences, along witha checkbox option to make detached instrument windows colored with the secondary theme.

Or even better: make the theme part of the instrument itself, so that each detached instrument window can host their own color theme/skin.

This is what we currently have:


And this is what I propose:


I could relate the colors of the tracks with instruments, so they have a direct association of colors. Something simpler. I wish I could better manage the instruments, by groups, rather than playing with colors. But if groups and colors can be configured, then better…Change complete style by the same instrument is very beast.Something more discreet would be fine.