'60 Valiant Wagon - Trying to find interior color for rear storage area

Hello Forum!
I'm in the process of restoring a 1960 V200 Suburban and I'm wondering if anyone on the forum might know what color the factory used to paint the inside of the tailgate and the rear storage compartment "hatches". The color looks like some sort of brown or tan color and it was the same on all wagons regardless of the exterior color. I have both dupont and ditzler paint chips as well as a color dupont index and none of these include that color.

Any insight would be appreciated.

Sincerely
Mark B.