I think JC is, as usual, correct (for standard 1954 cab interior color - Pearl Beige).
However,
this sales brochure shows a headliner that matches the interior color?
(sales brochure are often done by artists, not by photographs)
Deluxe interior (Pulsar Gray, with light Gray headliner) and two-tone interiors had other colors (none of them light tan).
Chevs of the 40s also sells
black, brown, and gray.
Classic Parts -
black, brown, and gray (and 2-tone interior). You could paint the headliner whatever color suits you.
I suggest painting/sealing the top/edges of the cardboard headliner to diminish warpage from moisture.
