I've had some black ones of him before. He only does Powder coated Gloss Black. There ok But I wasn't that impressed with them.
You might be better off going for some low profile ones. I've had some Camozzi ones from a local company called Interseals.
I find there Good quality and look very neat on the gun.
see
link
the camozzi ones are 16 and 17, Macroline guys are 18
they do a swivel version as well but the one above fits really tight to the marker
I've also had some sucess with car touch up paint,Comes in a small tube a bit like nail varnish and you can get in Matt Black.