Narf, too easy...
How do you shoot a pink elephant? With a water gun. The pink paint runs off as we all know elephants aren't pink. The elephant turns to gray, it's natural color.
How do you shoot a gray elephant? With a rubber band on it's trunk. The rubber band get stuck on the trunk and the elephant (not being able to breath) turns blue.
How do you shoot a blue elephant? With a paint gun. Use pink paint and no one will ever know you shot it in the first place.
See, AND you only need one elephant this way!
Any questions
?