I totally have to disagree that these stones are formed in the bowel. When I did my first Liver Flush I was doubled over in pain. I used the andreas flush, and had already drank the first two glasses of Epsom Salts . When 10 pm rolled around I drank the olive oil/grapefruit drink and immediately laid down on my back. Within 20 seconds I experienced tremendous relief. I could feel each of the liver/gall stones moving out. It felt like a pulsing under my right rib cage. The next morning I had a 2.5 cm stone and about 65 1-1.5 cm stones in total.
So if it was just bile moving out, I am sure I wouldn't have felt a thing, or if I did it wouldn't be pulsing.
I also have to say that it sounds very implausible to me that the liver/gallbladder would empty its bile into the bowels which would then form stones. If it could form in the bowels, why couldn't they form in the liver/gallbladder? What is so different.
Also some people don't clear out their bowels before a flush. They just do the olive oil and grapefruit juice. This will be followed by a bowel movement full of green stones. If it was just simply bile coming out of the liver/gallbladder it would mix with the other feces in the bowel making a green poop. Not a poop full of green lumps.
It makes sense though that the gall/ liver stones would absorb the oil based dye going through the bowels, and as the stones melt with heat... that dye would permeate all of the oil. Making it look like like the whole stone was full of the dye, when it was in fact just the outer layer. Take a stone, slice out the inside of it and let that melt independently. This should reveal a different story.
On top of all this there is the compelling evidence mentioned in this thread. After reading it, it appears that liver stones forming in the bowels is a great stretch.