Origo is a template based on the Freestyle template, with the design and layout taken from the very first template I created, andreas01. Origo has all the basic features of the Freestyle template, with additional styles added to make the design look more similar to the andreas01 template. For a longer description of how the Freestyle template was modified, see this blog post: Reconstructing the andreas01 layout with Freestyle. Further modifications to fonts, menu styles and positioning have been made for this release. Freestyle01, a similar template which uses the original CSS from the Freestyle template, can be found at the end of the linked blog post.
Updated (October 4th): Origo v1.1 adds two more layout examples (similar to the andreas01 layouts), support for subpages and a class showing the current page in the navigation menu.