here's the deal: i don't think there's a lot we can be doing right now (other than continue to be excited about this). either they'll play it over the PA system (like they really should), or the band is going to play it (and hopefully not play it to death a la "shout it out loud") or we're on our own.
if we're on our own, we're going to need a few heroes to start it in the student section and really do this thing organically. which is possible. that's how the first down cheer got started. that's how the OOD got started. that's how we resurrected EMAW. soccer hooligans do much more elaborate chants than what we'll be doing.
if it has to start in the student section, it should be just the chorus over and over and over again:
"Start wearing purple wearing purple,
Start wearing purple for me now
All your sanity and wits they will all vanish, I promise
It's just a matter of time
SO YEAH HA
Start wearing purple wearing purple..."
worst case scenario, just do the chorus three times or so.
but it's going to take heroes. some EMAW elite is going to have to get bombed on alcohol, get on his buddies' shoulders near the front of the student section, turn around so you're facing the crowd, and just belt it out. it'll be awkward at first, but it should pick up relatively quickly. and you'll look very, very cool and be starting something very special. it will be iconic. a student should jump at this opportunity.
that's the worst case scenario, and it's really not so bad.