It depends on the website that your league uses.
A university/college that uses the Rebel as the mascot is the University of Mississippi. The name of the sport team that uses Rebel as the mascot is the Ole Miss Rebels football team.
yes you can, infact my someone on my team uses one
The NFL football team the New Orleans Saints
The Harvard Football team's nickname is the Crimson, as in the dark red crimson color. This is similar to the Stanford Cardinal, which also uses a color as their team name. Also similar to Stanford, which uses a pine tree as its mascot, the Harvard Crimson's mascot is a pilgrim/patriot-looking character.
mostly team sports :) football Rugby cross country (individual) Athletics etc.
Football is a sport that uses a pigskin.
Crimson is the official color. The football team often uses white to compliment the crimson.
Each team uses their own footballs. The brand that sponsors the team usually is the brand of footballs used, if that brand makes footballs. (Most popular is Nike or the G5)