Nice Wee Theme
Over on Nice Wee Sites we recently released the Nice Wee Theme for Wordpress, and it’s just been approved for inclusion in the Wordpress theme directory. It’s loosely based on the design of this site (but nicer) and has a customisable header icon and avatar, allowing you to tailor it to suit the style of your site. View the demo site or download here.
Update: This site now uses the Nice Wee Theme by way of a demo.
You’re right, that really is a cute little theme. I wonder if the illustrator is available to do custom work as well.
If it’s the avatar you mean, you can create your own at Face Your Manga.