It would be like hockey referees signaling penalties with handfuls of glitter. And although I don’t know much about Ultimate Fighting, I’m pretty sure that those officials don’t signal foul play with pom-poms or a small, colored purse. “It looks like the referee has taken out his magenta clutch.”
Actually, if football lived up to its hype, the referees would indicate penalties by throwing a severed head onto the field. Fans describe the sport as a battle of warriors, a modern day version of gladiator combat. It is a game of primal screams, bone-crunching tackles, … and officials with pretty scarves.