Not 100% what you're asking for but here's an 88-93 GMC composite grille that isn't chrome. If I recall it's just black unpainted plastic aftermarket, on some old POS parts truck I bought.
You must be registered for see images attach
You must be registered for see images attach
One thing to keep in mind is that the chrome on the 88-93 grilles (OEM) is very thick and prone to wrinkling/peeling. If you want a nice, lasting finish you may want to remove the chrome which is a big job. It's a thick metal film vs. the very thin stuff you see on aftermarket grilles. Aftermarket you can simply sand off; OEM you have to grip it and peel it...once you start you may wish you never bothered!
Richard