[w.michael]

If it is in fact "original paint" which was applied at the factory, you may want to consider preserving that paint if possible. Don't be too quick to paint over it. The seller may mean that it is "the original color" for that car, or "an original color" for Model A's. The phrase can mean different things to different people. Model A's with original factory paint are becoming more scarce every year.

W. Michael