If you read the Liver Flush Documenting Health Effects forum, you'll notice that some lab reports that come back do confirm that the stones are indeed gallstones, whereas others confirm that the stones are not gallstones. The TAN ones come back as being gallstones. And the green ones don't, since they are, as Hanna said, just cholesterol and bile. The tan stones come from the gallbladder, so it makes sense that the lab reports would confirm that they are gallstones. The green ones come from the liver, so it makes sense that they are NOT comfirmed as being gallstones.
Your naturopath isn't correct in saying that the stones are olive oil. If he/she knew more about it - (like - hung around on Curezone long enough?) then he/she wouldn't have made that statement. Just cuz someone works in the alternative health field doesn't mean they know everything. (ie. take what you need, and leave the rest).
Best to you,
P.S. Next time you send a stone to the lab, make sure its a tan stone! That way you'll get the lab report that you expect.