Ok, so there are actually 58 skins total. There are 10 main designs, each of those has three options for the content background: white, stylish black and green polka dots, or a diagonal striped light tan/green background. And, each skin has the option of inserting a logo image via Dotnetnuke's logo function, or, if you don't have a logo, the website's name will automatically be inserted in the logo area when using a PortalName skin
There are 14 containers to choose from, all as artistic and stylish as the parent skins. Four of the containers are text only containers if you want to keep things simple.
Examples of the skins and containers can be seen here in action via the main menu.