Cameron Diaz is attached to star opposite Colin Firth in the Joel and Ethan Coen -scripted Gambit , a remake of the 1966 British caper starring Michael Caine and Shirley MacLaine . Gambit is one of the first projects financed by Crime Scene Pictures , launched in May by writer/director/producer Adam Ripp and agent-turned-producer Rob Paris. Glen Basner’s FilmNation will launch Gambit to foreign buyers at the upcoming European Film Market in Berlin. FilmNation and Crime Scene announced Diaz’s casting on Tuesday. Firth, a frontrunner for the Oscar for his performance in The King’s Speech, was previously attached to Gambit. Michael Hoffman (The Last Station) is directing the remake. Mike Lobbell is producing alongside Ripp and Paris. Hoffman begins shooting in London in May. Storyline revolves around a London art curator (Firth) who plots an elaborate scheme to con a wealthy collector into buying a fake Monet painting. As part of the ruse, he recruits a Texas steer roper (Di