Fancy a change of look for your blog? Why not try one of the Blog-City preset themes?
As you'll see below, there are a number of different themes to choose from. Go to the Skin menu of your blog administration interface and select one of the predefined themes.

Simply click on the radio box above each theme to select it. This will also automatically apply the theme to your actual blog. To preview how your blog would look with the new theme before actually applying it, simply click on the respective theme thumbnail image; that will open a new page with a preview of your live blog using that particular skin.