Doesn't look like we'll be making an aftermarket Tremor grille, we'd have to charge about $800 for it, and I don't think that's enough of a price difference from OEM.
Another idea, I might have the grille inserts (for the XL, XLT) made in the Tremor color and even a few other OEM paint colors. Then people could just snap the old inserts out and snap in the colored ones. I know the Tremor grille is a different design, but it would offer a cheaper alternative...