ELEGOO Standard LCD 3D Printer Resin, Fast UV-Curing 3D 405nm UV Resin Photopolymer Resin for High Precision Rapid LCD 3D Printing Black 1000G

This is a great resin option for gray prints you plan on manually painting or leaving gray. Pro tip: buy transparent resin and add your own coloring to it to get a wide variety of colors for less money. The gray, non-translucent color doesn't color well, but you can get it darkened with some tint if you want to. I prefer to manually paint most resin prints, and I often get lazy and just print with gray base color. The base color should be the darkest or most common color in the model, but gray works and looks cool on its own if you want a statue-like appearance.