BOULDER — Playing football for a losing team really stinks. Am I right, Brenden Rice? What’s the worst part of going out on the field wearing a Colorado Buffaloes uniform and getting beat, week after week? “That’s kind of an unfair question,” said Rice, son of the greatest NFL receiver who ever lived. But then, on a bluebird afternoon when the sun finally shined on the Buffs during a 34-0 shellacking of Arizona, Rice came clean. “Yeah,” Rice told me Saturday, “it s**** losing.” Adversity builds character.