I have a 1968 SS350 that I am freshening up the interior on. Does anyone know anything about the textured black paint that is in the "tunnels" of the speedometer and the fuel gauge in the instrument cluster? The car has medium blue interior, but like on all 68 clusters, these areas are black. I am looking for a modern equivalent to apply as part of the restoration. Some have said Rustoleum textured black, but which one? Your help is much appreciated.