And thats not all. Working with artists around the world confirmed that above all else, acrylic artists want the brightest, most vivid colors that do not change as they dry. Quinacridone Burnt Orange is a brownish orange color. It is a clean strong color based on the transparent Quinacridone pigment which was introduced in the 1950s. 0oz/60ml tube of Winsor & Newton Professional Acrylic Color Conforms to ASTM D4236.