See I think the lower center opening should stay open to match the areas to the sides. It has the same shape as well. The top two grilles have a curve at the bottom and IMO are fine as it. Having a grille in the bottom will to me make the two side areas look out of place. Hard to explain....
Looking at it with that comment actually makes sense! The shape is different in the bottom one.
Now, just to throw it out there again, I was also thinking about taking the fog bezels and painting the flat parts, not the round parts, the same color as the upper grilles, and that would leave only the center section open. Whatdya think with that in the mix? I'm still undecided, but I'm considering it.
So, the finished product would be small black circles around the fogs, with PTM bezels, PTM grilles, and a chrome mesh lower grille.
But again, the shape idea makes perfect sense. (Now that you pointed it out.

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