Fla54Chevy3100, I got my armrest from Chevy Duty and I had my upholsterer to match the same material for the door panels, headliner and sunvisors. The center bow for the headliner is above and the seam attaches to it.

TEDS 54 PANEL, According to Dupont's 1953 Chevrolet Truck Color Bullentin, that interior color is "Sheen Gray Metallic" and yes, that is the orginial color, at least for the 53.