If you are wearing a pair of jeans or slacks with a neutral solid colored shirt, you can easily throw on a pair of purple suede pumps and make your whole outfit pop! (thefashionablehousewife.com)
I'd really like such a scarf myself, but most of all I liked your shoes, they make the whole outfit pop. (somethinggoldsomethingblue.com)
I agree that a pop of color can brighten up a whole outfit (fashionsquad.com)