I googled phpbb styles out of curiosity, and found a few looks that I think might (with some tinkering) suite our community.
http://demo.phpbb3styles.net/DirtyBoard2.0
This one's a bit cheesy:
http://demo.phpbb3styles.net/Dragonia
And two ones based on WoW, but those parts can be removed:
http://demo.phpbb3styles.net/cataclysmwow
http://demo.phpbb3styles.net/WoW5thAniversary