you can do it with Gimp or any photoshop app if not possible in CM...
Here already something to get you going :
View attachment 1334878
DOWNLOAD (drag & drop in CM to install this new skin)
(includes also same style previews for the 2 original skins)
I don't know how far you wanna take it , but from afar this already kinda resembles the yellow road version... (I hid some parts that are not on the road version, but some things like the spoiler can't easily be changed to match the road version)
This is the most effort I wanted to put into this...

Enjoy it , improve on it if you want (or not). It's completely yours to do with what you want...