I have loved red bikes since buying my first new bike as an adult, a deep, metallic gorgeous red. I still think that's my most beautiful bike ever. But I have a bright red road bike that doesn't look half as good.
I've always liked black and grey stuff, but the colours do tend to disappear. White bikes are very sexy. I now have a white mtb 
Funny thing, I love brown and green and earth tones, in clothing and in general, but I dislike them on bikes. They just look wrong to me.
I don't like pink, but I have seen some very cool pink bikes with attitude.
Winter riding is much less about badassery and much more about bundle-uppery. - malkin
1995 Kona Cinder Cone commuterFrankenbike/Selle Italia SLR Lady Gel Flow
2008 white Nakamura Summit Custom mtb/Terry Falcon X
2000 Schwinn Fastback Comp road bike/Specialized Jett