The First of the Season! Wepaint’s New Shade Showdown: Powered By OPI   Watch the best of Idol so-far PLUS get a sneak peek of OPI's newest innovation in texture: Liquid Sand™. These four shades are from the Mariah Carey by OPI collection, inspired by the Idol diva herself, Mariah Carey!   Episode 1: New York Auditions. Episode 2: Chicago Auditions.   Episode 3: Charlotte Auditions. Episode 4: Baton Rouge Auditions. Episode 5: San Antonio & Long Beach Auditions....