go around and scavenge up all the left over paint you can find from your neighbors and local body shops. then stop into the dollar store and load up on cheapo brushes of all sizes. call up your local high school art class and invite them over. you will have a truck that nobody else will ever have after the art class is done.
great Idea BTW I have a lot of paint, Mainly spray can but some spray gun type with hardeners etc.