The cast coat aluminum isn't anywhere near as dark silver as chippers pics show on the valve cover, the shadowing of the pic almost makes it look like the cast coat iron color they also sell. which is almost like gunmetal in color.... In daylight they would look much closer to the factory 91 up painted covers even has a slight green tint to it like the factory paint. It lays pretty good to and will handle a light sanding if you want to dull the shine.
I've been using both to paint my non polished parts the past couple days. Steel / iron parts - Block, a/c brackets ect..got the cast coat iron and the aluminum parts get the cast coat aluminum..... Take your time and sand most of the heavy pitting/ casting flash off, they will come out looking 100 times better, plus it saves yeah from polishing all those parts with the hard to get to areas. I'll snap some pics of the things off the car that are all ready done when I get a chance.