I updated the PaddyGreen custom theme to be compatible with the new 2.1 release of SilverStripe. Now it uses the Theme API and supports blogs model out of the box.
New version includes a new widget panel in the footer, which could be customized to display site wide widgets (such as flickr images, del.icio.us links)
You could see a working demo of the theme at : http://www.web2media.net/silverstripe
Download the theme and try out - http://www.web2media.net/silverstripe/paddygreen.zip
Please report any browser issues and improvements you would like to see.