Hmm, interesting concept, one I hadn't considered. There would have to be some considerable work to get a unique map for every planet, as there are a limited number of placeables in the game and using 4 more could potentially cause some issues with other mods and certainly if K1R. is installed. From what I can gather, it uses a fair number of placeables and depending on your other mods, your count could run out quickly.
That all being said, I had future dreams of making a map for each zone, e.g. sand-blasted in Tatootine, overgrown in Kash, etc. I think implementing a color into that as well would really be amazing. Great idea!
At the very least, I could make colored versions, allowing the user to just install whichever color they preferred. Thanks for the input and please holler if you have any other ideas!