While the UU2014 theme comes with a set of default images, you can add your own images by going to
Appearance -> Header. The images bundled with the theme are 940 pixels by 198 pixels. The maximum suggested width of images is 1200 pixels and we strongly suggest that you use a consistent height. During the upload process you will have the option to crop the image. The theme will work with larger or smaller images if you wish.
If you upload multiple images you will then see a choice for “Random” which will cause the theme to randomly display one of your images when a page is viewed (including when a page is refreshed).