Katy Perry has switched her hair color yet again -the "Firework" singer appears on the cover of the latest issue of L'Officiel Paris magazine sporting bright orange hair. For the pictorial photographed by fashion lensman Cuneyt Akeroglu for the magazine's September issue, Perry became a "ginger" for the shoot.She is wearing a peach dress and rosy makeup to compliment her orange tresses. The 27-year-old's look was temporary for the photo shoot, she was photogarphed over the weekend sporting short dark hair again. Perry recently split from singer John Mayer and was rumored to have turned down a $20 million offer to be a judge on the upcoming season of "American Idol."