So I bought my g37 last fall (a 2009 CPO). While it was in generally fantastic condition, one small thing that was damaged when I bought the car was the driver's side tweeter. There is an approx 1cm wide and 4 inches long scratch in the black plastic of the tweeter. It has virtually no depth (you can't really feel it) but is discolored to a grey color instead of black.

Anyone have any ideas of how to fix this (doesn't have to be absolutely perfect). My first thought was some sort of marker, but I have a feeling the colors won't match and it will look even worse.