Looking to change slider/footer color

First I wanna say thanks for a great job on this theme. I am very new to editing css/html. I am trying to change the color of the slider and footer to a color of my choice. I tried going to the style.css stylesheet and tried making these changes #secondary-menu { background-color: #D0153A; } #footer-menu { background-color: #D0153A; after updating the stylesheet nothing changed. Could you tell me where I made the mistake and how to implement these new changes. Thanks, Drew