Emilia Azcárate presents an untitled piece, which belongs to her series of pieces based on the Pintura de Castas (Painting of Breeds) that were produced in Colonial America around the eighteenth century and that matches with the appearance of an Isaac Newton publication on primary colors ("Opticks", 1704), both were contributions to the production of this series, which the artist explains: “Taking advantage of this significant coincidence, I assigned to each of the main races that contributed to the miscegenation process in America one of the primary colors. Yellow to the Indians, as a symbol of wealth; blue to the Africans as a symbol of nature; and red to the Spanish for the importance they gave to the "purity" of blood. From this arrangement I combine each primary color according to the race that corresponds to it, using an approximate percentage system. In parallel, I designed an alphabet that resembles hieroglyphics, cuneiform writing or "codex" where text and image form an inseparable pair. In my alphabet the letters have no limitations. In caste painting the text says what the image hides." (Information taken from the portal Tiempos Modernos. Art Decó / Antigüedades del siglo XX).