Rivals had posted some shots of what purported to be Michigan's road uniforms this season. They controversially(!) featured white pants, and they are a real thing:
— Chris Partridge (@CoachCPartridge) August 16, 2015
Michigan had a brief period in the mid-70s in which they wore uniforms very similar to those. You can see what they looked like (and get your RDA recommended dosage of Keith Jackson) in the introductions to the 1974 OSU game. A wider shot of the pants comes at 1:15:
A better look at the uniforms is available to people willing to watch the infamous Mike Lantry "miss" in 1974:
These are legit throwbacks, so they've got that going for them.