colloidal silver turning you blue

on the msn.com web site today it has a page about Colloidal Silver , how bad it is for you. pretty scary stuff, until you see who wrote it. how they made it, turning blue. kidney damage etc. would anyone like to respond to msn.com and put their 2 cents in. if it is so bad just ban it. but no you can buy it online drugstores, healthfood shops etc. no warning labels etc. buunch of C_ _ _