The procedure done at the factory level was to black it out, although most times very hastily done. I believe I used a 20% flatted black paint to knock out any glossy appearance, not gloss or semigloss, it would be too shiny. I also painted all of the grille supports and anything you can see through the grille. I didn't do this at first and had a couple of those components body color...they stuck out like a sore thumb!!! I also had 3 different grille centers painted... one the correct black, one body color and one body color with the stripes that continued through the fins. The body color centers just looked so out of place and the black one looked so right that I opted for the correct application. Hope this helps, Geof