Lily Moayeri Playing the main character in a biopic is a tall order for any actor, but taking on the role of influential musician Boy George in the forthcoming film “Karma Chameleon” seems even more of a challenge considering his multi-faceted life as a cultural icon, fashion trailblazer and the sound of the 1980s.As of this week, the lead has yet to be cast for the film, which is still in pre-production with writer-director Sacha Gervasi (“Hitchcock”); Millennium Films is backing the project.