Bistre (#3D2B1F) and Bone (#E3DAC9) appear together across 6 master palettes in our corpus, most prominently in the work of Robert Charles Dudley, Camille Pissarro, and Arkhyp Kuindzhi and the Romanticism tradition. Painters typically deployed bistre at an average of 25% of the canvas, with bone at 16%. Third colors most often completing the combination include Eerie black (#1B1B1B), Khaki (#C3B091), and Shadow (#8A795D).