Open the driver’s door — Like other information placarded on your vehicle, paint code information is typically found inside the driver’s door on the door jamb or the inside of the door. Two types of paint codes are listed — one is for the exterior paint, the other is for the cabin or interior color.ne code may say “paint” the other “trim.” Jot down the paint code and call your dealer’s service department to have them decode this for you. Check the owner’s manual — If you can’t find the paint code, check your car owner’s manual as that book may identify where the paint code placards have been placed.