Warrior Dash So. Cal

This year a group of friends and I are going to try our hand at the Warrior Dash for the first time. *Super Excited*
However, it seems customary to dress in costume as they have a costume competition.... and well, we love making *kitten* of ourselves but seem to be stuck on a theme we should all dress for. Does anyone have any ideas? So far we have two themes in mind: zombies or prom night.... or, dare I say, Zombie Prom Night???
Any other suggestions or thoughts would be greatly appreciated!!!
:happy:

-Lauri