Copper (#B87333) and Minion yellow (#F5E050) appear together across 6 master palettes in our corpus, most prominently in the work of Frank Xavier Leyendecker, and Vincent van Gogh and the Art Nouveau tradition. Painters typically deployed copper at an average of 3% of the canvas, with minion yellow at 9%. Third colors most often completing the combination include Smoky black (#100C08), Dark olive green (#556B2F), and Old gold (#CFB53B).