1968 grill. What color ar the shelves behind the chrome.

[georgieb51]

I do not have a truck to look at but I am creating a 1968 front grill with white paint with aluminum hoops and aluminum hood bar and fender eyebrows.on a medium green (503) color truck. I realize the white is an off-color white but today I began to wonder what color the "shelves" are painted behind the inside of the hoops.

I have been looking at a lot of photos. Some trucks look like the shelves are black. Others show the shelves painted the same basic color as the rest of the truck (green in my case). Are the shelves ever painted white? I wish I knew what was correct-- what GM did at the factory. It seems like it would have taken a lot of work to paint these shelves anything other than white.. But I do not know so that is why I am asking. Please post phots of what you have done.
Thanks, george