66' Barracuda Grills color

Quick Question and I've yet to see it on here as of yet.

What color is the painted part of the Cast grills for the 66'
Barracuda?

I sent mine out for re-chroming a while back and they returned all chrome ( I expected that) and the grey-ish dark blue color on all 10 of my spares (not worth saving mind you) is all over the place due to damage, sun fade etc. Does anyone have an idea what they were painted from the factory around the outer parts and inside the squares? It kinda looks like the dark argent grey on the Ralley centers but I just cannot pin point it.

After $1200.00 to re-chrome, I kinda want them the correct color if there is such a thing.
Joe