D'oh, you'll just need to install both the Notebook and Black is Beautiful contact list themes:

Notebook: http://adiumxtras.com/index.php?a=xtr...tra_id=2820
Black is Beautiful: http://adiumxtras.com/index.php?a=xtr...tra_id=2461

Just set them as this Xtra's description says:
Color Theme: Black is Beautiful
List Layout: notebook
Window Style: Group Bubbles

Looks awesome! Thanks!

Same; I've tried both the Install and Download methods. :|