Although I prefer black on white and vice versa I do have white tiles on one of my white v-cubes. Recognition is about the same. It shouldn't interfere with it too much.
Anyway I think Nakajima's 234567 Relay has white stickers on a white V Cube. I think that the White V Cube with black stickers looks drop dead gorgeous.
I use a white V-cube with white stickers. No real reason why, I just traded V-5's with someone and their's happened to have white stickers. It took me a little to get used to the white on white, but now I have the same(or even better considering I haven't solved black on white in a while) recognition as black on white.