Interested in performance and static site generators, I took a stab at making a theme for Jekyll. Built on Bootstrap and inspired by Swiss Design, it includes page/post templates designed to let the content breathe with a healthy dose of negative space. Built before I had much experience with Sass and build tools, I plan to eventually refactor the project to use Gulp for its build process (image optimization would be a big add, for instance) and Sass for its styling.
Swiss Jekyll theme, hosted on GitHub, viewable as a GitHub Pages project.
Jekyll; Bootstrap; CSS; GitHub and GitHub Pages.