The blue guy made his wrong and drank it by boatloads that's why he turned color.
I use and make my own colloidal silver and use it when necessary. Great for tooth infections, throat, etc... works for me. I don't take it all the time, use more as one would an antibiotic. Great for cuts too, you can find band aids with colloidal silver in them and burn units use silver from what I am told.
If you want to make your own there are numerous videos on it and also Earth Clinic has a really good video. Many home remedies there. Naturally do your own research when treating yourself or loved ones. Look up many different sources and don't rely on just one source.