An idea to make costomization faster and easier. (I didn't know which catagory to use)

I’ve been trying to do this on my own but I keep messing up.
Would it be possible for you (or whoever makes the textures) to color code the individual parts of the vehicles textures, similar to the enclosed screenshot?
Doing this would probably result in an increase in high quality custom skins.

Also would it be possible to let people create custom decals and decorations that can be used for multiple vehicles?
I wanted to try and make a 3D model of one of those wax sealed texts that can be seen on the power armor of the Warhammer 40k space marines.