Hi, I have to concurr. My experience with the olive oil flush is...bright yellow-white stool, then gall bladder like pains, though g b is missing, then boom, the stool changed from yellow to dark dark water brown with green stones. Now something happened. Something was let loose. I agree the green stones are old bile hardened. The yellower, the more cholesterol. The darker, the older it is. I haven't yet found a calcium stone. I wish the doctors would help more. Kelly