I went through this same hassle trying to find black open-ended lug nuts for our threads. PITA. I suspect Gorilla will not have what you want. IIRC, they have black (closed-end, not open-end) but that was it. I ended up finding mine on eBay. Turned out okay, was a tad pricey, but it was like I was overflowing with options. Powdercoat would be better than anodized - anodized will fade. Good luck in the hunt.