Bone (#E3DAC9) and Persian plum (#701C1C) appear together across 6 master palettes in our corpus, most prominently in the work of Giovanni Costa, Charles Demuth, and Thomas Sully and the Academic Art tradition. Painters typically deployed bone at an average of 28% of the canvas, with persian plum at 7%. Third colors most often completing the combination include Khaki (#C3B091), Raisin black (#242124), and Dark sienna (#3C1414).