One of the things about rebuilding the site is that we're now able to upload new forum themes to the site, which you can choose based on your own preferences.
Simply to go:
'Profile' -> 'Look and Layout Preferences'
You'll see the 'Current Theme: SMF Default Theme - Core (Change)
Clicking on '(Change)' will bring up a list of installed themes, choose 'use this theme' in the lower right corner, and select.
Enjoy!