The color of the grass block in the sulfur cube depends on the biome

When a Sulfur Cube absorbs a grass block, its top face becomes covered with a neat grassy layer. The idea is that the color of this grass always matches the exact shade of the grass in the biome where the cube is currently locate. Move into a jungle and the cube turns a vivid green, step into a dark forest and the grass darkens. The cube becomes a mobile biome vegetation indicator. The usefulness of this mechanic: Color transport. Players can take a unique grass shade from a rare biome — such as the turquoise of a warm ocean meadow or the deep color of a jungle — simply by leading the cube on a lead. Decorative building. A living lawn that changes its tint based on the biome lets you create adaptive gardens, color-coded pathways, and smooth transitions between base zones without texture packs or commands. Navigation without the debug screen. The cube’s grass color instantly reveals the biome, even if the ground around you is bare dirt, stone, or water. This is handy with the F3 screen turned off or in adventure maps. A small personal addition that feels natural: if you shear a Sulfur Cube that has a grassy top, it drops a grass block that permanently retains the exact biome tint the cube displayed at the moment of shearing. You can place that block anywhere, and its shade will never change. This allows players to legitimately obtain colored grass from any biome in pure survival, without breaking balance, and turns the Sulfur Cube into an essential tool for lands.