Seth, good for you! I've read stones can be tan/gallbladder or green/liver. You may be seeing some parasites too as they love to hang out in the bile ducts in the liver. Isn't this lovely, lol! I found the more I did liver flushes, I just kept getting more and more stuff out, until there were no more stones, only chaff (small popcorn kernel looking things).
If you want to really get the stones and toxins out, you might want to try an enema so that the toxins won't sit in your intestines where they can be reabsorbed. I've found I passed stones for a few days afterwards.