The stripe/flame is airbrushed on after the lower black was sprayed on. The paint was a mix the painter came up with using House of Kolor paints. It wasn't very expensive and would have been close to the same price as the factory vinyl stickers except I had the entire hood and truck clear coated so there was no seam at the paint edge.
I looked up the Foose Chevelle and here is a picture. It is straight painted flames and you can find it on the Chevy High Performance website.