Brown poop or dark brown poop is generally a normal colour. If it’s black, that’s not good. It could mean bleeding. If it’s green, you probably have a lot of green vegetables. If it’s white, that’s not good because it may mean your bile duct is blocked. If it’s yellow, you may have too much fat and grease. If it’s red, it could mean you had a lot of red fruits or vegetables, but it could also that there is blood and there is bleeding. That is not normal.