Good afternoon. I have a question. My wedding ring, that I have been wearing for 18 years now and is super lose on me, has started turning my finger a dark color. It washes off but I have just this week started noticing it. My wedding ring is gold and I also wear a silver ring on my other hand and it does not turn my finger dark. Is this associated with my WLS? My surgery was 9/18/15. I appreciate any help on what this could be. I just don't want to miss a sign (if this is one) of an issue.