It's no secret that we're big fans of gReader here at AP, and the latest beta makes us love it even more, as it brings a complete UI overhaul to the application. The dev has redesigned the app to follow the Android Design Guidelines, so it's all Holo-ed out. And it looks fantastic.
As you can see, the new interface ditches the dark-ish theme to go with Holo light, which looks great and feels faster and more fluid. The overall layout of the app hasn't changed that much, with most buttons remaining in the same place as they were before.