I hate to break it to ya but it does sound like ya need a paint job.The question to paint or not .The best way to determine that would be if you have a scratch,nick or crack on every or every other panel.If its every other panel,the question is how close is it to the next panel.If its with in 6 inches or so ,youll also have to paint that panel because of blending.For instance,if you had to replace your door,you most likely wouldnt be able to just paint the door.you would have to blend and clear the panels next to it.The part that sucks on corvettes is that there arent any breaking points meaning on the back end and the front end there isnt any where to tape it off.GM s reccommended repair is to paint the entire panel no matter what.That really is the best way but you can spot some colors in without telling they have been fixed.
The only other thing you can do is to fill the scratches up with paint using a good small brush and then buff it flat.If you do this you risk the chance of buffing through the paint on either side of the scratch.Someone help me I cant shut up. :TALK BTW this is paintdaddy,I cant log my wife out of her own computer.