The wiper arms that were on my car when I purchased it in 1976 were/are a dull silver/aluminum bare metal finish. Although I painted mine flat black when I purchased it to further minimize sunlight glint off them, that black is mostly gone now. I do not know if the arms on my car are the factory-original ones or not, but they would be an early replacement if not. Note: I do have NOS wiper assemblies for my '69 Corvette that I purchased at a swap meet in the '70's.. and have never installed; still in the box, but I don't know if the Corvette units are the same/similar to the Camaro or not; the Corvette wipers are hidden under the wiper door, so aren't subject to sun-glint as are the Camaro ones, and that might have led to a difference in the specification provided to the wiper suppliers? I can go pull the corvette wipers from their box and photograph them if anyone is interested; I can't recall if I ever even looked at them?