We can assign colors to tracks now, so why not assign colors to track folders as well? What good is it to color the tracks when they all disappear in a folder (that you can't color)?
 
Please and thank you!

pretty sure you can color track folders. 

Yes, track folders already have the same color picker hot spot as tracks and buses.

OK !!!!!!!!
This thread is SOLVED. Thank you!
The "hot spot" is at the far left of the track / folder information, and YES we can change colors of the track folders using the hot spot.
 
Before, I was trying to change the color in the Inspector section... and I wasn't able to change it there...
nothing in the Sonar instructions under "track folders"
 
thank you to everyone who has responded.