I may have this completly wrong but my doctor (and what I have read elsewhere) told me this was a sign that the liver was not functioning correctly. That it could mean a blocked tube or that the liver wasn't producing enough bile, ie sluggish. I just posted an article in the liver section yesterday about supplements for the liver and they found that people had to have about 1\4 a cup of oil daily in order to empty the gall bladder daily. If you are eating meat this isn't probably a problem but if you are vegitarian, or are on a low fat diet you may not be getting enough bile produced daily to properly digest your food. I did both the vegitarian diet and low fat diet for about 7 or 8 years so it's no wonder I have gallstones.
My daughter had blond stools till she did about three liver flushes. Now they are a normal color. I'd think this is a sign to keep doing the flushes, and check your diet to make sure you are getting the supplements you need for a healthy liver.
Sorry to disagree. If I were you I would post a question about the blond stools in the bowel section and see what they have to say as they know a lot more about stools than I do. Maybe I'm wrong, but then again maybe I'm right.