Woody on the 54 grille they were a matte kind of silver color on one of the others (1950)it was creme colored and the other a 1949 it was white. Of the 18 those are the three that had chrome grills. Here is my latest find a 1953 got caught in a brush fire but its painted grill has been preserved by the massive home-made bumper. I bought the truck for the grill (my 50 needs one) it has lots of other good stuff too just singed a bit. Just got it home last night #19!
http://good-times.webshots.com/photo/2903797930102454676RFhLeN