With water. In the age of the original absinthe fever, the drink was always diluted with water and sweetened with sugar before consumption. First, a cube of sugar was placed on a perforated spoon resting on the top of a glass of neat absinthe.
I had a minivan with paint on the hood and roof gone. The Maaco guys quoted ~$500 for their basic probably crappy paint on the whole car. I asked how much for the hood, he said $800 because he would have to match the paint and then apply clearcoat.
Otherwise, supplies including paint, tint, primer, clear topcoat and painting tools will run in the $100 to $200 price range. Since the bumper is not a large portion of the entire car, the cost of supplies for painting the bumper will not be exceedingly high.