Did this 1970 grill feature get axed for production?

[Love 70 Chevys]

Hello All - I have the 1970 Chevrolet Movers sales brochure for C10's. Every truck from the base model to the CST's shows silver horizontal bars on the black plastic grill. I can't remember ever seeing a truck with this feature in real life. If I look closely at my '70 grill, there are flat rectangular "pads" where a secondary operation could have been done to add some silver paint on top of the black plastic. Was this a feature that made the photo shoot, but never production? I think it would be kind of cool to take a silver paint pen and do it by hand. Would be very easy to do as the molded surfaces are all there. Does anyone have a truck with a grill that looks like the brochure? Would love to see a real one!