The blue man, affectionately known to some as Papa Smurf, has died of a heart attack at 62 years old. Paul Karason had a condition called Argyria, which is a bluish tinge to skin as a result of using silver. His death was not caused by his blue skin, but as a result of persistent heart problems. He appeared on the Today Show in 2008 to discuss his blue skin and it made him an internet sensation.