Another update....
I wanted it a little darker, so I mixed up another batch, using a little more black and have plenty left to do touch ups in the future..
Color is just perfect for me, really nice dark charcoal.
I'm absolutely happy with the color now!
Plus it looks good with my matte finish grill.

Those of you that want true BLACK cladding, using just the black will definitely get you there!

Last pic shows you can still see original texture of cladding. Means this stuff is mostly going into the plastic, not coating it. And it's really a matte/flat finish, not shiny at all, despite pics making it appear like it has a little sheen.