Bistre (#3D2B1F) and Spanish gray (#989898) appear together across 6 master palettes in our corpus, most prominently in the work of Guido Hampe, Miklos Barabas, and Johann Hermann Carmiencke and the Romanticism tradition. Painters typically deployed bistre at an average of 21% of the canvas, with spanish gray at 15%. Third colors most often completing the combination include Eerie black (#1B1B1B), Khaki (#C3B091), and Shadow (#8A795D).