RE: CMP Zero and retracks
Re: Paint
No not offhand...
Whenever I've run into a similiar situation, I've resorted to not trying to match things exactly, but rather highlighting my ( ahem, ) "mistakes" by making them part of the plane's design.
e.g. if the paint chipped off, paint a larger regularly sized area ( e.g. square or circle ) in a complementary color, then duplicate that for the other wing... it makes the "mistake" look like part of the original plane...
Do apply Top Flight Clear Coat to preserve the paint job when you are done constructing the plane, but before you put any transparent pieces on.