What color should a blazer be? Elegant people will agree: it’s blue. Classically navy, possibly midnight, possibly royal. Postulate number 1: the fabric is smooth, with no pattern. The exception to the rule: a flannel look for winter, an open plaited structure for summer. Part 2: this blazer will feature metal buttons, the main aim being to differentiate it from a suit jacket.

There’s nothing more deplorable than trying to make a suit jacket look like a suit jacket. suit in caviar for a blazer. But back to the question. The origins of the blazer lie in a little jacket sports club jacket. History that can legitimize the colored blazer. There was a lot of this between 1970 and 2000, with, for example, the choice of a bottle-green or wine-red sheet, combined with gold buttons. For a party with a tycoon close to Margaret Thatcher, it was ideal. No elegant man, however, would have disgraced himself in the process.

So how…