I don't know why she's making that face while wearing such an awesome gown.
If your outfit contains all neutral colors like hers does (cream top and navy jeans with brown belt), then you can easily add up to two brightly colored accessories without being over done. The bright green wool coat paired with the red pumps is a stand-out look, and in a good way! All pieces would be in a wardrobe for years....all classic.
green jacket, red shoes...perfect