1. Mesosilver isn't grey. It's actually amber colored. It can turn grey however, if it becomes oxidized though that isn't ideal. - Which only emphasizes the differences between both solutions(processing etc).
2. Since you're not using Mesosilver, the title of your post is misleading, and so I really think you should adjust it so as to avoid any false incrimination in the process. - If you can't do that(edit lock), you can report it to a MOD and add a note along with it.
Sorry to hear about your condition btw. Though I really think there are too many factors(treatments) at play to figure out which is which in terms of reactions. Though I wouldn't put a pass to the Antibiotics causing the most damage. ie, I've taken Antibiotics that caused me grief for several years afterward(joint, bone loss etc).