That black helmet I think is a good look. Red on black is a tough look like that though.
Here are a couple ideas I came up with that I think would be reasonable based off of the road jersey being white as usual while trying to contrast with the Wisconsin look. It's hard to think that they would go complete Nike/Oregon black out uni like in the previous photoshop looks,
especially when rules are pretty stringent (aside from pre-season arrangements) but you never know. So I went with these:
It doesn't really matter what they wear but it is fun to speculate.