I love the touchbar highlight feature but I wish it gave me an option – which color to use for highlighting.
Do you mean the Touch Bar on the Mac?
The problem there is that Apple are phasing it out. I think we added that many years ago, and probably didn’t update it when we added highlighting a year or so ago.
Note that you should be able to select colors in other ways. We will consider adding colors on the Touch Bar.
Thank you for your answer, Drew!
If only Apple had indie developers utilize the Bar the way you did – they wouldn’t need to phase it out 
Appreciate the encouragement. Thanks!