As for doing a splatter paint work they use brush or other things you can use, torn newspaper I have seen it done with , just by dipping it in to the paint and slinging it, same way they do with a brush. as for the base coats could be in silver or even pearlesant color.
I am not too sure about splatter painting, but I do know they make different kinds of texture paints, on the older cars they use what they call a trunk paint , which you can buy at meijers, walmart or auto parts store, they also have what they call wrinkle paint, which is pretty cool also.
What is it that you are painting?