Joe,

Two-tone interior sheet metal colors were avialable in 1954/55 (in the Advance Design trucks) and Pearl Beige was not one of the two-tone interior colors (GregH will correct me and/or provide more information on this).

Maybe someone else with a 54/55 will post information about the seat frame (my pickup did not have original interior paint when I got it, so I am not sure if the seat frame was the interior color).

To clarify/correct what I posted earlier: in my Suburban, the front-seat base was painted interior color; the rest of the front-seat frame and all rear seat frames were painted the interior moulding color (Maroon for the Suburban). Maybe the Pearl Beige Interior had Brown seat frames (and Pearl Beige base) but that is not clear from the Dupont link above. Here are two other interior photos from Sales Brochures:

Deluxe Pulsar Gray Interior with Maroon trim-panel and Pearl Beige seat frame
Standard Pearl Beige Interior with Brown trim-panel and Pearl Beige seat frame

Jim Carter's striping paint sheet had information about pin striping but not information on interior colors.

Here are pinstripe and radio grill photos:

Belt Pinstrip on side
Belt Pinstripe near wiper post
Three pinstripes on a wheel
Radio Grill vertical black stripes

Tim