Shadow (#8A795D) and Sonic silver (#757575) appear together across 6 master palettes in our corpus, most prominently in the work of Grigoriy Goldstein, Salvator Rosa, and Antonio de La Gándara and the Symbolism tradition. Painters typically deployed shadow at an average of 21% of the canvas, with sonic silver at 12%. Third colors most often completing the combination include Khaki (#C3B091), Spanish gray (#989898), and Raisin black (#242124).