Not only that, he claims the silver saved his life and he was given a clean bill of health after taking a complete physical at Mount Sinai hospital at the request of one of the many talk shows he appeared on. But you hardly see any of that reported.
It is really hard to turn blue, but if you want to do so make your own highly concentrated large particle silver at home with tap water, contaminate it with salt and then drink over a quart a day month after month after month. You'll eventually get there.
On the other hand, purchase a good colloidal or ionic silver product of 20 ppm or less, or make your own silver at home with a quality machine and distilled water, and consume it in reasonable amounts when needed and you will see no blue or other ill effects and likely many good ones.