Sorry, but i haven't really played much with the color things yet. I'm guessing what you're talking about though, is the rules that define each color/color set and how they're supposed to be shaded in game?
If you're just looking at colors, another thing you may want to look into is the .dds files that contain your skins (went through most these for a mod i worked on) and see about just manually redoing the appearance of a specific part or skin. Could add your own custom details, recolor, or even remove specific parts if you're any good with paint.net or a similar editing program.