If you have a blog powered by BlogEngine it might be worth heading on over to the Blog Engine Gallery to see what extensions or themes you can download and use on your blog.
I was taking a look over there recently and noticed that my CoolBlue theme is now available for download in the themes section. Simply head on over to http://dnbegallery.org/cms/List/Themes/CoolBlue and click the download link. Setup couldn't be easier. Just pop the CoolBlue folder into your themes folder and you will be able to select the theme from your admin area.
The BlogEngine Gallery is a really great idea - especially now that NuGet is gaining popularity. I'm hoping to have some newer themes available over the summer and I'll definitely be using the BlogEngine Gallery to help get the themes out there for people to download.