Gunmetal (#2a3439) and Smoky black (#100C08) appear together across 6 master palettes in our corpus, most prominently in the work of Anna Palm de Rosa, Henry Anderton, and Antonio Maria Esquivel and the Baroque tradition. Painters typically deployed gunmetal at an average of 34% of the canvas, with smoky black at 13%. Third colors most often completing the combination include Bistre (#3D2B1F), Olive Drab (#3C341F), and Khaki (#C3B091).