Epsilon is a light-colored theme I made some time ago, and was default theme up on Bloczone a long time. Since then it has been lying dormant, so I have changed it a bit to be used on regular SMF installations. Features include 3 "user-boxes" that you can fill with any HTML content. Beware that the theme is a bit inflexible: it will not work well on screens below of 800x600, creating scrollbars.
Theme and graphics are free to use within a SMF forum context.