Bone (#E3DAC9) and Dim gray (#696969) appear together across 6 master palettes in our corpus, most prominently in the work of Vaszary János, Cesare Agostino Detti, and Il Sassetta (Stefano di Giovanni) and the Academic Art tradition. Painters typically deployed bone at an average of 31% of the canvas, with dim gray at 10%. Third colors most often completing the combination include Khaki (#C3B091), Shadow (#8A795D), and Raisin black (#242124).