Copper penny (#AD6F69) and Khaki (#C3B091) appear together across 6 master palettes in our corpus, most prominently in the work of Nicolas de Fer, Fujishima Takeji, and Konstantin Somov and the Baroque tradition. Painters typically deployed copper penny at an average of 21% of the canvas, with khaki at 6%. Third colors most often completing the combination include Bone (#E3DAC9), Magnolia (#F2E8D7), and Liver chestnut (#987456).