I don't know if anyone mentioned this yet but this article is part of the front-page news at SI.com
SI.com - NCAA Football - Iowa State lets fans help choose new helmet design - Tuesday August 21, 2007 4:38PM
Mostly just a recap with quotes from JP and GC but this part was new to me:
Teams hardly ever let their fans pick what they'll wear. In 2002, the Seattle Seahawks became the first NFL team to let its fans to help choose its uniform ensemble, giving them a choice between a blue or a gray helmet to go with their new uniforms. The blue design, currently still in use, received 76.6 percent of the votes.