White is pretty common, but it has the advantages of looking cleaner, longer while black looks absolutely awesome clean, it can look shabby pretty quick. If you have the time and energy to keep it clean, do the black.
The breaking point for me on color was an experience I had with an Oslo Blue Discovery, and I kept after it, but scratches stand out pretty good unless you keep after them with rubbing them out. My Current LR3 is silver, has three times the scratching, but it is very difficult to tell.