I'm not all sure about this, but I doubt that it means anything. I think the color of stool just depends on what you eat. Like if you eat something green, blue, or yellow, its usually a green color. If I eat something light brown, red, or orange, its usually a reddish-brown color or just brown. Them if I eat dark colored food, its usually dark. Plus, the stool has corn in it if you ate corn, or if you ate cole slaw, it would look like its "shredded"
really, I just think it has to do on what you ate for the past week, but if you are really concerned about it, you should mention it to your doctor.