Bistre (#3D2B1F) and Cool grey (#8C92AC) appear together across 6 master palettes in our corpus, most prominently in the work of Paul Mathiopoulos, Paul Leroy, and Francis Danby and the Romanticism tradition. Painters typically deployed bistre at an average of 21% of the canvas, with cool grey at 7%. Third colors most often completing the combination include Smoky black (#100C08), Khaki (#C3B091), and Drab dark brown (#4A412A).