How to change the color of the scroll bar in a scrolling panel?

It's so frustrating to locate threads like this where a simple features request like this has been asked for numerous times over the course of years knowing that instead of working on this, Articulate has been creating scrolling textboxes that no one asked for or wants.  I swear Articulate has some damage control to do for that mistake.  Maybe start by implementing some of these feature requests?