1. When there is a lot of artboards, it can be VERY confusing when you look at the prototype portion of things. It would be great to be able color code the artboards and prototype details so that it will allow for better organization and visual traction.
2. Here are screenshots of the idea.
Before
After
3. Is this something that you as a Figma user would value? Being able to decide the colors would also help keep things better organized.