Background images are selectable via a RokGallery interface, or through a standalone alternative.
ColorChooser allows you to modify the color scheme easily. Choose from light/dark modes as well as full color controls over other backgrounds, text, and links.
The Gantry Framework operates at the template core, providing all the base features and functionality. Prominent features include the extensive and user friendly template interface, plus mobile modes for iPhone and Android.
RokGallery is an advanced Gallery extension, built on an intuitive custom tag architecture.
Support for the iPhone and Android platforms, with template specific theming.
This demo includes a series of RocketTheme Extensions, with template specific styling.
This site has a range of guides to introduce you to the basics of the template.
Momentum has valid code, based on the XHTML 1.0 Transitional standards.