Brown Mooshrooms would be a new mob, which only spawns on mushroom islands. They would have their own spawn egg, and the normal mooshrooms, would be renamed to Red Mooshrooms. The Brown Mooshroom texture would be like the Red Mooshroom's texture, but it has no mushroom on its head, the mushrooms are brown mushrooms, the red on the Red Mooshroom, is the brown mushroom color, and the white on the Red Mooshroom texture is tan. They would be shearable, turning them into normal cows, and when sheared they would drop brown mushrooms. They can be milked with a bowl for mushroom soup.