We are often asked how it's possible to change the design of a site without switching themes. While the theme is certainly an important backbone for the design of your website, it is not all that matters. Using Custom Pages, the rest of the Design Tab, add-ons, and re-arranging pages, you can make two websites with the same theme look very different.
For instance, check out these two sites. They're both using the theme Nova, but they look quite different.
1. Main Street Bistro - http://mainbistro.pagevamp.com
2. Pomodoro - http://pomodoro.pagevamp.com