Feature: Track colors follow Track Folder Color

[Josh Wolfer]

Super simple. There is already the option to have tracks follow the bus color. I'd like a follow track folder color. 

That's all. Not super important, but would be nice and is hopefully low hanging fruit. 

I don't always set everything logically to go through the same bus. For example, in this case, I have both FX, FX HALL, and FX OUT going to the FX bus, but the track folders hold different variations of sound source. So this would be handy

Cheers!