Sap Green from DANIEL SMITH is wonderful - the hue we love with the permanency we need. This non-fugitive formulation creates deep forest shadow-green mixed with French Ultramarine and mossy golden-greens and green-browns when mixed with Burnt Sienna or Quinacridone Sienna or Burnt Orange. Sap Green mixes well with most pigments and leaves a stained residue when lifted. In the French Ultramarine or Quinacridone mixtures mentioned above, squeegee or knife areas to reveal the Sap Green stain and to create blades of spring-shiny grasses within deeper or mossy passages. Light fastness: Excellent Medium Staining Granulation: Yes Transparent