Go to view - show groups. That should do it.

Go to preferences, appearance, and set it to "size to fit vertically". If your contact list is bigger than your screen you will get a scroll bar nonetheless.

Hope this helps.

I bet you can :) Anyway, nice work.

I made a light blue version for myself. If you want I can send it to you or if you're ok with it I can upload it here. Anyway, the original art is just plain great.

This is awesome! Any chance for a light blue one?