Bone (#E3DAC9) and Outer space (#2D383A) appear together across 6 master palettes in our corpus, most prominently in the work of Arthur Dove, Frederick Morgan, and Grigoriy Myasoyedov and the Realism tradition. Painters typically deployed bone at an average of 19% of the canvas, with outer space at 11%. Third colors most often completing the combination include Eerie black (#1B1B1B), Shadow (#8A795D), and Ebony (#555D50).