Has Any One Had A Pain Ball Themed Birthday Party?

It might be fun to cover the cake with a smooth coating of royal icing (like a petit four) and once it's dried hard throw squirt, or drop from a great height, small amounts of different colored frostings on it to make it look like it's been hit by paint balls.  I've never done this before, so can't testify as to the results, but in my mind it looks great.
I'd practice different techniques on an icing covered box first, before having a go at the cake itself just in case i'd doesn't pan out for some reason... Have fun!

YESSSSSS i have seen it on TV but i don't know how they made it. I swear it was really ycool that person was happy!!!!!!