So technically the Colorado mascot is a buffalo named Ralphie and that is pretty cool, just like how Texas has an actual longhorn named Bevo. However, there is another mascot named Chip, and while he is no Ralphie, he is still pretty cool.
He has posted videos of him skying in the mountains and is electric when interacting with the crowd. Chip also pairs well with Ralphie and those two can make the Colorado atmosphere electric.