Recently I became bored with the way Flatland looked, so I decided to change it a bit. I started by making the tabs actually flat, then added a light-themed sidebar, now I’m adding a new style for the folders in the sidebar. Thought it might look cool, but I’m still not totally sold on the final product. I may tweak it a bit before calling it done, or you can tweak it by sending me a pull request. This, as with all of my other modifications, is an extension to the Flatland theme and can be enabled in your options (instructions are here.)