"In a further show of respect, the students step "off the wood" (step off of the bleachers onto the concrete) whenever a player is injured."

http://en.wikipedia.org/wiki/Traditions_of_Texas_A%26M_University

Nebraska's balloon release after the first points scored by BYU (with blue balloons, or maybe something like confetti if it's allowed at LES)

And picking one color shirt that everyone wears to every game. No striped sections, no switching colors. This would include a section of t-shirts at the bookstore that are marked as "Gameday Approved."