Denise Richards says her brunette transformation happened on a “whim” after a chat with her daughters. The former blonde actress, 53, who has girls Lola, 18, and Sami, 20, with her 68-year-old former husband Charlie Sheen, as well as an adopted daughter Eloise, 12, says her older girls also encouraged her to go “darker again” after they saw throwback snaps of her in her younger acting days, which saw her star in films including ‘Wild Things’ with dark brown locks. She told People: “I went darker because actually, my older daughters were the ones that encouraged me to because they saw pictures …