Bone (#E3DAC9) and Rhythm (#777696) appear together across 6 master palettes in our corpus, most prominently in the work of Johan Christian Dahl, Georges Valmier, and Henri-Edmond Cross and the Romanticism tradition. Painters typically deployed bone at an average of 26% of the canvas, with rhythm at 10%. Third colors most often completing the combination include Raisin black (#242124), Middle grey (#8B8680), and Khaki (#C3B091).