This is a little bit of an aside, but it should be noted that black anodizing as done in the 70s and 80s (mostly) is a more labor intensive and expensive process than paint or powdercoat, at least on an industrial scale. Parts need to get pretty much just as prepped as they do for final polishing in order to be anodized. There's going to be handwork. Paint on the other hand can cover up a lot of sins. Take parts right out of the molds, clean 'em off, spray.