Headliner Color Confusion

[Wolfe440]

1971 Charger R/T.

The Broadcast sheet that came with the car shows the interior trim as a D6XA.
Under that code all the colors of the trim in the car are correct, gunmetal seats, black dash and carpet, gunmetal and black door panels.

From what I am reading.... under the D6XA code the headliner is designated as black and only black. But the car has what appears to be is an original light blue headliner (faded gunmetal?) and it also has gunmetal visors.

Under the D6XA code could a headliner be other then only black? 

Thx Wolf.