Black is a solid color...using chrome first will do nothing for you. I don't know if Caswell sells it but there is a transparent black out there somewhere. I'm not sure if it will do what you want but it wouldn't hurt to put it on the color request list. I'm sure if it works or is worth selling Caswell will stock it. I've shot high gloss black and it does come out very shiny...If you can't get the transparent black I'd go with the high gloss black.
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