paint codes and interior colors

Legondary Interiors might know what carpet is most common with that color interior.
The same color was used in 66. The delux interior 66 had a small piece of carpet on the toe kick area of the bucket seat back. I have one of those here.
Once in a blue moon you will find a tag still on the bottom of the floor carpet. If its there it's in the right rear foot well area. Good luck