Minecraft wiki entry for Tint, associated text: Biome grass and foliage colors are selected from two 256×256 colormap images: grass.png and foliage.png. Both colormaps, shown to the right, can be found in assets\minecraft\textures\colormap‌[JE only] or textures\colormap‌[BE only]. The grass.png colormap sets the colors for the grass block top and sides (along with other types of grass, such as tall grass, ferns, double tall grass, etc.). Meanwhile, the foliage.png colormap sets the colors for tree leaves (with the exception of spruce and birch).