I'm a geek, and I added a
userstyles.org CSS patch last year that increases contrast and clears out some noisy areas of the layout. Let's just say that forum UI bothers me enough to do something about it.
This is very much subjective, but tweaks or suggestions are welcome, or just mention if you like it. I use the Stylish plugin for Chrome to apply it, but this also works in Firefox or any other browser that can patch CSS for users.