Paper explination?

I am pretty sure that the color of the belts is part of the interior package, so the color would be predetermined by which interior color combo you chose. As far as colors, I have alos seen red and tan. 67DartGT340's are copper if I recall correctly (very sharp). On a 67 broadcast sheet I have for one of my old Barracudas, there is a box that allows the inclusion of a center belt (presume that was an option on front benches for that year).

Shoulder belts were optional on many earlier (to 72?), they may have been optional, however the cars I have do have, have them and they are not coded separately.

Grant