SilentAlley is a multi-color scheme tumblr theme,include three color styles.It’s support full screen background image and you can change it easily, so I think it’s suit for photographer,artist or designer use.Meanwhile, you can change some parts of color,e.g. Links color, article title background and so on, it’s unlimited color.
Demo: http://themeforest.net/item/silent-alley-responsive-multicolor-tumblr-theme/3331664