Sap Green is used primarily for all things foliage. With mixtures of Sap Green, the Yellows and Bright Red, beautiful highlights may be added to trees, bushes and grassy areas. A staple Bob Ross color. One of fourteen warm clean colors, yielding endless numbers of natural combinations in a smooth yet firm consistency necessary to the Bob Ross Wet-on-Wet Technique. No other paints can accomplish what these do, and every batch is individually tested for perfection.