Sua is the mythic origin of genipa (Genipa americana), the plant whose juice gives the deep blue-black dye the Achuar use to paint the face and body. In the paired myth of Sua and Ipiak two women are courted and, through a story of deceit and transformation, become the two great dye plants, Sua the black genipa and Ipiak the red annatto. The narrative accounts for the complementary body-paints that distinguish festive, ritual and warlike self-presentation, and joins the wider Jivaroan repertoire of tales in which humans pass into the plants and birds of the present world.