'Explosively graphic' lesbian scenes shock Cannes crowds The sexually graphic lesbian love story "Blue is the Warmest Colour" on Sunday scooped the top Palme d'Or prize at the Cannes Film Festival. French-Tunisian director Abdellatif Kechiche's three-hour film set Cannes abuzz with its explicit unsimulated sex scenes and has made a star out of one of its lead actresses Adele Exarchopoulos. Recent interview with the director.