Some people couldn't figure out why I said you shouldn't wear teal in Paris. Apparently it makes up a large part of many people's wardrobes. Just take a look through the Lands End catalog, where everything seems to come in teal.
Anyway, I came across this in a new book about what men (French men, anyway) shouldn't wear. It's called L'Art de mal s'habiller sans le savoir ("the art of dressing badly without knowing it"-- fun book, by the way) by Marc Beaugé, and is originally from a menswear column in Le Monde, where you can read the original article in French.
Wear teal if you like... and don't mind being considered a badly dressed tourist. Not everyone cares, I guess....