I agree with [...] that it's always good to get lab work done to rule out any serious problems.
Once you do, just try to relax about it. Your stomach is lined with GABA receptors; small wonder that benzo w/d wreaks havoc with GI function. "Clay colored" is different than "lighter than normal", and bile production/diet/etc can have a lot to do with all this.
Abdominal xrays and ultrasounds performed and no stone or something out of the ordinary lol. I've done it all that at this point wouldnt be surprised if its WD
It sounds like you've had enough lab work already to relax about serious problems. Watch out for too much youtube etc, there's a lot of pseudoscientific nonsense out there that sounds plausible but just isn't true. If you're not having any pain, and you're able to function, then your body is getting the nutrients it needs! You could try keeping a log of what you eat to look for any patterns.
For what it's worth I had all kinds of strange movements during w/d. I think I'm well on my way to being healed now, and things are more normal, but my stomach is still more sensitive to insult than it was 10 years ago.