The new Bob Ross Mountain Mixture color is used for underpainting trees and bushes, ground area and, of course, mountains. A real timesaver often used to replace mixtures of Alizarin Crimson, Phthalo Blue, Prussian Blue, Van Dyke Brown, etc. Pre-mixed to get you to the fun part quicker! 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 TechniqueŒs. No other paints can accomplish what these do, and every batch is individually tested for perfection.