Adding & customizing overlays

I mark parts of routes that I liked the most and put it in a “best of” route folder. In addition I like to view my driven routes. Some routes are overlayed and the routes look all the same which makes it hard to differentiate. If colors were available I’d also create a “avoid” route folder with red coloring instead of routes driven: blue and best of: green.

So I’m wondering: Is there any update on colored overlays?