Dark brown (#654321) and Zinnwaldite brown (#2C1608) appear together across 6 master palettes in our corpus, most prominently in the work of Marcin Zaleski, Agostino Tassi, and Ginevra Cantofoli and the Romanticism tradition. Painters typically deployed dark brown at an average of 29% of the canvas, with zinnwaldite brown at 14%. Third colors most often completing the combination include Smoky black (#100C08), Metallic Sunburst (#9C7C38), and Coyote brown (#81613C).