I used Automotive touch up and bought some Gator green to do diff covers.
I would not use them again as the cans varied in color. The can I used for diffs came out dark. The wheel covers were ok for three and a bit dark on one. The cans sprayed very difficultly. If you zoom in on the picture you can see the color is close but not a match.
if I do anything else, I will look for other suppliers.