As a long-time football coach, Pat Shurmur knows how football coaches operate, which is why the Colorado Buffaloes won’t show much during their annual spring game on Saturday. The weather may not be ideal for the annual Black & Gold scrimmage at Folsom Field (1 p.m., Pac-12 Network), but one thing fans can count on is a lot of vanilla in the play calling. “I don’t have much of a life here, so what I do is I sit at home and I’ve been just flipping through other teams spring games,” said Shurmur, the first-year offensive coordinator of the Buffs.