Survive the Zombie Apocalypse

I wonder if they'll make these zombie damage skins unlock-able elsewhere, cause they're pretty decent.
I wouldn't mind using one of them in place of the default, at least.

Also, to go along with what others are saying, with events like these it would be nice if you either had the option of opting-out, or at least have to opt-in before you're able to see/pick up the infection coins (since they can change your face and such).