@romin Initially, it was only supposed to be smaller tweaks to the CSS to fix the color contrast issues in the default/light theme. But I ended up doing a lot of the layout changes as well. Overall, the new theme tries to look cleaner and more readable. The HTML also makes use of more semantic tags, so it should work better with things like screen readers (although, frameset is the biggest issue here). It also works better with browsers with limited CSS support or with no CSS as well.
I'm running the branch on a different subdomain for now. https://bloat2.freesoftwareextremist.com