coupled with the official animated music video and incorporating similar animation style at various points of the video utilizing known BYU landmarks, Cosmo, and animated students would be awesome.

Plop this animation up on the big screens while the ROC is going crazy with whatever they come up with would be a blast. Apparently this animation was done by USC students (quite possibly high on hallucinogens) but it's fun to watch. BYU apparently has a pretty well respected animation program. I'm sure they could figure it out.

While singing the song, every time it goes "Mr Blue Sky please tell us why," the crowd could shout the "WHY! while flashing the hand sign.

As in, "Mr Blue Sky please tell us Y."

Honestly, I think even the blue hairs would enjoy this song.

Check out the video and let your imagination run. CoogsWin has a great idea here. I think this could work and be a lot of fun.

https://www.youtube.com/watch?v=G8dsvclf3Tk