The stock/standard 1954 1/2 ton truck’s hubcaps were painted Thistle Gray
The same gray as on the inner surfaces of the middle and bottom grill bar (on the painted grill).

There is a blue bow-tie in the center of the hub cap; and, inside the blue bow-tie is a gray bow-tie.

The blue bow-tie is recessed into the cap, and, the gray bow-tie has a raised/embossed border.

This reproduction stainless/chrome hub cap has the same type of embossment and raised center.