 A "rebellious" Colby would cause trouble for her father Adam.Colby re-introduction mirrored that of her half-sister Hayley Vaughan (Kelly Ripa)'s debut in November 1990.In the summer of 2007, Colby develops a crush on the much older Josh Madden (Colin Egglesfield), despite his interest in her ex sister-in-law, Babe Carey (Alexa Havins).