A secret group/cadre of of young males (castrated) residing in O.M.R. Purple is meant (by them) to be a sign of royalty. However, it actually is in reference to their overtly homosexual tendencies.
Oh, that gay kid named Harrison is a member of the Purple Team!
A team in the Halo series of video games that win by default. Membership is very selective; however, the people that do the selecting are awesome, thus if you are awesome you will be invited to purple team.
Purple Team just completely just pwned your team in 1 Flag CTF on Epilogue.