Doing this as Lumpy’s car from Leave it to Beaver . Research shows that at one time or another the car was said to be black, purple, maroon or grey . I saw a episode where Wally tells Beaver they painted the car gray . In the show it sure looked like primer to me so that is what I decided to go with . Never found a mention or good pic to tell the interior color . In some shows it looked light and others dark . I just used a brown I had .