I like to avoid wearing dark colors on the bike. My bike itself is snow white. Especially in bad weather conditions, the number one thing people say when they wreck into a biker is "I didn't even see him!"
Over here in London, where the weather is less-than-optimal, full textile suits and fluorescent crossing guard vests are the norm. When you see people dressing for image, they're usually rocking a Learner plate.
Of course, there are those guys who have...