Is it some special shade or finish of black? I have a couple of black touchup kits, one gloss and one matte. They are just standard or universal black and are for my TSW wheels that have both finishes.
Great question, they've been on my car for years and years. I'll go to the site and see if they are matt or gloss.
edit
They are listed as SP finish, which is Standard Polish. I would believe they are gloss