Aero (#7CB9E8) and Brown sugar (#AF6E4D) appear together across 6 master palettes in our corpus, most prominently in the work of Ippolito Caffi, and Frederic Bazille and the Realism tradition. Painters typically deployed aero at an average of 4% of the canvas, with brown sugar at 5%. Third colors most often completing the combination include Raisin black (#242124), Columbia Blue (#B9D9EB), and Dark lava (#483C32).