Here's an article that argues both sides:
Basically a bunch of coaches and administrators saying they think uniforms make a difference and a bunch of recruits saying it makes very little difference.
"Here's the real question: Are uniforms important enough to make a difference in a prospect's decision? An ESPN.com survey indicates that Oregon's hundreds of uniform combinations, Rutgers' battle-scarred jerseys and Nebraska's alternate black jerseys might not matter as much as many think."
"ESPN.com surveyed more than 700 high school recruits from the classes of 2014 and 2015 -- including 90 who self-identified as a member of the ESPN 300 for the Classes of 2014 or 2015 -- and asked them where uniforms ranked in their college decision. Uniforms were the top factor for only 3 percent of players, and uniforms ranked eighth on the list of criteria behind academics, coaching, playing time, school tradition, location, experience sending players to the NFL and television exposure."
""It wasn't a factor at all, but if there is a sick uniform you can sort of visualize yourself in it," Georgia tight end commitment Jeb Blazevich, the nation's No. 94 player from Charlotte (N.C.) Christian School. "You know, 'That'd be awesome.' But then you have to think, are you going to sleep in your uniform? Are you going to practice in your uniform? Or are you going to go to go to class in your uniform?"
"It doesn't matter what color or number that you have on. At the end of the day when you're running down the field, all you really care about is how well you do in the game. If you're a recruit and you're thinking about picking a school because it has cool uniforms -- grow up and check your swag at the door. You're making a lifelong decision. Why are you putting it into clothes?"
"The nation's No. 1 prospect, running back Leonard Fournette of New Orleans (La.) St. Augustine, agreed that uniforms pale in comparison to factors like future major, playing time and relationships with coaches. "All of these things go way beyond uniforms," Fournette said."