I have been trying to find info on this for some time, with minimal luck. I am trying to find decent paint for a gas tank, but I want it in a matte finish. I am nearing the point where I will just get a cheap rattle can matte and just respray when I get adhesion problems from gas spillage. I do have access to a full spray booth and I can work with any paint chemistry. I also have the option of just matting down the clearcoat I suppose with some silica or perhaps a matting wax. Anyone have ideas on this?