This has been eating at me for some time now. There are many colors that I do not like on classic bikes. Many come from that period of cultural confusion the 80s where the two tone, fade one into another really made for some horrible combinations. Still my worse ever single color for a classic bicycle is brown. I don't care if it is metallic brown, opaque, root beer. Brown is brown and does not enhance either the chrome, the saddles or the tires.
There, I got it off my chest, now let the pro brown group chime in.