So my doc put me on Questan because my stool was bright yellow, indicating lots of bile in the stool. Questran captures the bile. Since I have been taking it, the color of my stool has changed. Sometimes its like a dull medium brown, but sometimes, its a light brown, like Khaki. It that considered "clay colored" What is clay colored anyway? Like grey? I've seen lots of colors of clay before, ranging from grey to brown to light red, so its hard to know what "clay colored" is.