1969 Dart Interior

How many colors of light blue was used on 69 dart Swingers interior.I have a 69 dart swinger 340 car but there is no fender tag.It has all light blue interior and the exterior is light blue also.Someone before me put two racing bucket seats in the front and I want to install a benchseat back in the car and will need to order a seat cover for the seat I have.Also the seat I have has headrest is that normal for a 69 Dart swinger to have headrest.My other 69 dart Swinger does not have them .Was that an option.Any help would be greatly appreciated.We worked on the car all weekend and just about have it ready to run.I was wanting to order a seat cover this week and need to know what to order.The interior in the car is original except for the front seats,and the exterior paint is original except for the drivers fender was replaced and painted to try to match the rest of the paint somewhat.

Bobby