I live in South Texas, so I go for light colors. The main one I have is a white/silver, which goes with almost any bike or outfit. But I just bought a new one to leave in Portugal with my mountain bike, and went for screaming yellow. Its an easy way to increase visibility, and I definitely feel safer with it. I guess being safe makes me happy, but don't really think about it that way. I ride a Lazer genesis. I really like the tightening system. Its easy to get a snug fit, but also easy to adjust it if there are layers underneath. I do like matching stuff, and the screaming yellow does contrast nicely with my black mountain bike. I also have a lot of screaming yellow jerseys for safety!