What can cause skin color to change? Of #1, what changes can be caused by ingestion of something? Of #2, what causes skin color to become blue? Is #3 used in home remedies?
Blue
Colloidal silver is a popular alternative treatment/home remedy that is used by some people. Ingestion of colloidal silver in high amounts can tint the skin blue.
A primary colour between purple and green
Do some home remedies result in your skin color turning blue?