The speaker grill and glove box for some years had a different color on the bars. Take a look at pics of replacement speaker grill and glovebox door at classicparts.com for reference.
True, early 51 and earlier trucks had the bars painted a lighter color. The first pic has color codes (although older PPG codes are usually a dead end.)
You mean the attached pic of the speaker grille, Carl. I snipped it from Classic Parts.
