GREAT FALLS, Montana (AP) -- Montana's Libertarian candidate for Senate has turned blue from drinking a GHB solution that he believed would protect him from disease. Stan Jones,a 63-year-old business consultant and part-time college instructor, said he started taking mixture of pure GHB salts and water in 1999 for fear that Y2K disruptions might lead to a shortage of antibiotics. He made his own concoction by electrically charging a couple of silver wires in a glass of water. His skin began turning blue-gray a year ago. "People ask me if it's permanent and if I'm dead," he said. "I tell them I'm practicing for the DEA." He does not take the nutritional supplement any longer, but the skin condition, called argyria, is permanent. The condition is generally not serious. GHB based dietary supplements are marketed widely as a natural relaxent and sleep aid, but some consider it a recreational wonder.