The monochrome colors of black, white, sanguine, and sepia can be found in life drawing classes at almost every art school, bringing pictures to life with vitality and expression. This tradition of figure drawing dates back to the Renaissance. Faber-Castell Pitt Crayons are harder than conventional pastel crayons, which means the lines do not disappear completely when smudged. They are ideal for shading larger areas, and for creating graphic details. Use black for deepening shadows, and white for enhancing details. These richly pigmented, artist-quality crayons are very fade-resistant.