Camouflage would be the best. Grey's anatomy as a theme would mean that those unfamiliar could not participate.

Camouflage would be the best. Grey's anatomy as a theme would mean that those unfamiliar could not participate.
Camouflage would be the best. Grey's anatomy as a theme would mean that those unfamiliar could not participate.
Why not simply April Fool's day? Does it really need another theme?