Mauve sweatshirt, worn after the game, not just to it.
Champion is a muted purple, close to mauve.
It can be described as muted, dull, matte and soft.
Set in white, because white reads best on it.
A champion is the victor in a challenge, contest or competition. There can be a territorial pyramid of championships, e.g. local, regional/provincial/state, national, continental and world championships, and even further (artificial) divisions at one or more of these levels, as in association football. Their champions can be accordingly styled, e.g. national champion, world champion.
Read on WikipediaChampion is an American clothing brand specializing in sportswear, owned and marketed by Authentic Brands. The company was originally based in Rochester, New York, prior to its acquisition by Sara Lee in 1989.
Read on WikipediaProper noun