The Community Starter Kit engine supports the concept of skins or themes, letting you radically change the look of the site by choosing a different theme from the admin page.

And there is always a mechanic on stand-by at the back of the car with a power-operated engine starter, ready for instant use if the car stalls.

If you're using a servlet engine that requires you to provide WAR files, you can use the same Shale starter application's build file, with a slight modification.