Khaki (#C3B091) and Onyx (#353839) appear together across 6 master palettes in our corpus, most prominently in the work of Carlo Carra, Odoardo Borrani, and Harry Phelan Gibb and the Futurism tradition. Painters typically deployed khaki at an average of 23% of the canvas, with onyx at 15%. Third colors most often completing the combination include Middle grey (#8B8680), Shadow (#8A795D), and Eerie black (#1B1B1B).