Rocket Theme was originally designed by Julian Ridden to provide a non-Moodle-like interface for sites around the web. The theme itself is highly customizable providing the ability to change logos, colors, footer links, and provides a custom block location. The theme also features a layout that while fixed width, has only two columns which changes the look and feel a bit when you hit a site using it.
Unfortunately Julian has moved onto a new role, however the Rocket theme has been adopted by DualCube, a Moodle customization and theme organization which has no updated the theme and released it for Moodle 2.6 and up, including 2.9.
DualCube works with WordPress, WooCommerce and Moodle providing clients custom development services. You can see a list of their contributions to the Moodle Plugin database at https://moodle.org/plugins/browse.php?list=contributor&id=1832609.
Check out the gallery below and an original tutorial video by @Moodleman himself explaining the customization that can be done with the theme. Download it from https://moodle.org/plugins/view/theme_rocket,
Direct video link: https://www.youtube.com/watch?v=jN7nXyatzgI