Get The Latest Look! Traditionally, flat finishes were achieved by running the car in primer. This gave the look, but only for a short time, as primers are not UV resistant. Eastwood’s rat rod flat and matte finishes allow you to get a durable and UV resistant finish in an easy to spray product. Eastwood’s Rat Rod Black provides a smooth satin finish, while Dead Rat Flat Black provides a near flat black finish. Eastwood also offers a matte clear which can be applied to any color to create a totally custom look.