There is a phenomenon in the genes of some people who made them be born blue. Yes the actual color blue. There has been entire families with the gene that made them all blue. There are also others who became blue due to a silver supplemental solution. The correct name for this condition is Argyria. Please read with detail to see their differences. First I am going to address the phenomenon which is more common in nowadays society, due to ingestion of heavy metals, like silver (and perhaps others). People who became blue due to heavy metal content in their blood: * Why So Blue?