I agree that cars with boring colors tend to be found in better shape when talking about project cars. There also seem to be more of them left out there vs the hemi orange, red, black, ect. cars.

Some of that may be that the popular colored cars were found and restored first, and what is left are the "leftovers" so to speak.

It's kinda the same thing with manual 4 speed cars. When you see them as projects they are often abused like nobody's business. A column shift version of the same type of car has usually faired better.