College football fans are used to one-off specialty uniforms — everything from desert camouflage to futuristic shock trooper to whatever Oregon decides to wear this week. But Northwestern’s gear for its Saturday home game against Michigan has drawn some criticism for its design — a flag-themed ensemble with splatters of red all over it that’s supposed to raise awareness for the Wounded Warrior Project. The game-worn jerseys will be auctioned off after the final gun, with 100 percent of the proceeds going to the WWP. Replicas sold by the school will also benefit the charity — one dime out of…