The one a few rows in front is a guy from my stake that I like a lot. He has 3 kids who attend BYU, so he will attend BYU games occasionally. He wore very neutral clothing.
The guy immediately behind me I didn't know. He was also wearing neutral clothing. During that incredible 6 minute stretch, i was celebrating with the people around us, and that's when he said he was a Ute fan.
Although he wasn't full on rooting for BYU or KState, he had a good time. After the punt return, I gave him a high 5, which he gladly accepted. As he was leaving, I told him he was welcome to attend anytime.
If you're a Ute fan, and you attend a BYU game not against the Utes, that's how you do it.