I have a new Centaur gray, and as pretty as it is, I will not do it again. It scratches very easy. The gray is basically a clear (well, gray transparent) coating on the components..
My chain came off a couple of time to the outside of the right crank, and now it is scratched, and the scratches show.. If I would have known this I may have gone with the silver..
That said, it really looks nice on my bike