Hi all. I am painting murals on a brick surface for a commission and would like to know what paint to use! The wall is going to be rolled and I will be laying down base coats of figures in Montana spray paint and then doing fine details with an airbrush. I am wondering as to what the best (cheapest and quickest) paint there is. The walls are indoors so I am not too worried about fading and weathering. I am mainly a graffiti artist and spray paint is my medium so I am used to using opaque paint. I want to know which paints will work best with my airbrush (badger 100 side feed medium ) and if they will react with the spray paint. Thanks!