I'm a bonehead or blind; you pick I used some duplicolor brush on caliper paint on my rotor hats to get rid of the rusty look. I accidentally dragged the brush against the brake caliper which has some sort of black finish. This is on a new touareg (yes it's a TDI) The black finish may be powder coat, I'm not sure, and I'd like to remove that caliper paint. It's been on there for 2 weeks; I just never noticed it. Any ideas before I get at it with a bit of fine sandpaper?