KEYSTONE - Members of Keystone Lake muralist Jay O'Meilia's family visited Keystone Dam powerhouse recently to view the mural he painted half a century ago for the first time, in person. Pictured from left are grandson Andrew O’Meilia, son Danny O’Meilia, son Matt O’Meilia, granddaughter Maddie O’Meilia, son Mark O’Meilia, daughter Frannie Walden and son-in-law, John Walden. Jay O’Meilia painted…