Black out the grille?
I did this a while ago looks 10000x better just tape off around it with newspaper or just take it out and spray her down with some krylon, just make sure it's nice and clean, you shouldn't need to prime it, atleast I didn't and it's held up very well
My grille was the plastic one and it was that gray color that was fading. I cleaned it real well (rubbing alcohol, then dry, then windex (ammonia), then let it dry) and sprayed Krylon semi-flat black on it and it looks great after a year. No problems at all. I did the back trim around the rear window also, because it was faded to almost white and it still looks great.

