Andy Warhol's former colleague Isabelle Collin Dufresne has lost her battle with cancer at the age of 78. Dufresne passed away in Manhattan on Saturday (14Jun14), according to the New York Times. The artist met Warhol in the 1960s and subsequently starred in his two films, The Life of Juanita Castro and I, a Man. She also appeared in small roles in Midnight Cowboy, Taking Off and An Unmarried Woman. In addition to her film work, Dufresne also worked as an artist under the name Ultra Violet and hosted her last exhibit three weeks before her death.