Well, I'll admit it. I am shallow. I was foolish when I got my road bike, and I thought color didn't matter, but I have never liked the silverish color of my Sequoia. Since then, I have insisted that all my bikes be red or pink. I shopped for an MTB till I found one that felt good and was red, and I special ordered my commuter bike and had it painted red. My grocery store bike just happened to be pink, and that's one of the reasons I bought it.
My helmet's red, my Camelbak's red, most of my shirts are red. My next car will be red. What that says about me is that I like red (and pink, but mostly red).