French bistre (#856D4D) and Zinnwaldite brown (#2C1608) appear together across 6 master palettes in our corpus, most prominently in the work of Ludwig Mecklenburg, Jacob Ochtervelt, and Maurice Poirson and the Romanticism tradition. Painters typically deployed french bistre at an average of 23% of the canvas, with zinnwaldite brown at 14%. Third colors most often completing the combination include Smoky black (#100C08), Café noir (#4B3621), and Khaki (#C3B091).