But a tie is itself totally reasonable

Felix Salmon writes about the clothes of some guy named Thomas Barrack.

The photo accompanying the article shows Barrack wearing that most horrible of fashion ideas, the colored shirt with a white collar. Many years ago, shirts did actually come with detachable collars and cuffs, which were normally white, no matter what color the rest of the shirt was. But no one wears detachable collars any more – which means that there's no excuse for the collar not matching the rest of the shirt. (italics added)

So the tie as personal decoration is totally reasonable but a two-toned shirt somehow is over the edge of decency. Sheesh.