I use a towel and an old T-shirt....occaisionally a drop of water !!!
Oh and a top tip......for the cleaning of the front pneumatics on my cocker (3 way, hammer etc) I use a toothbrush and cotton buds (no not the giant ones from gladiators)
No probs m8, getting the paint outta your pneumatics is a god damn pain in the ass...just glad to pass on my knowledge (this method is also used by scribble, another one of Apocs finest)