Just because, I've added a tweaked version of the old, darker, design as an option on the sidebar there (if you're on the front page, that is).
For this to work it needs your browser to have cookies enabled. That's the only thing this site cookies for, so don't worry.
Some of these tweaks may have messed up the design of some old interior links, but I hope not. Let me know if you encounter any freakish difficulty.