The Mayo Clinic explains the Colloidal silver's effect: "It's not clear how much colloidal silver may be harmful, but it can build up in your body's tissues over months or years. Most commonly, this results in argyria (ahr-JIR-e-uh), a blue-gray discoloration of your skin, eyes, internal organs, nails and gums. While argyria doesn't pose a serious health problem, it can be a cosmetic nightmare because it's not reversible, even when you stop taking silver products."
I personally have used collodial silver, unfortunately I did not drink enough to turn blue. However if you are interested, which I am sure you are you can read of the benfits and buy your own here. And of course, the packaging is great as seen below.
Um.... good luck, I guess, eh.
Blue Man group may be a career, and if you need a career coach contact me :).