I've matched gear with my mountain bike (black/purple). I bought the bike because it matched my helmet (which caused the woman at the LBS to go into spasms trying to stifle her laughter.) It's got a purple water cage and my gloves are black & purple.

My road bike is a light shade of blue with white. I don't wear pastel blues, or white for that matter, at all so all of my black/purple stuff is used with that one too.