In some cases the colors seem to follow the physical terrain, in some cases it does not, and that makes it a bit confusing in my opinion. If these are different soils or some sort of atmospheric condition I'd expect it to follow the physical terrain more closely. I don't think this is something that could be accomplished with a bit of tweaking, the image overall is quite nice. (Of course you could have intended to have wide bands of color like that, perhaps to underscore the alien nature of this planet.)

I'd love to hear more about your world