
I've completed the theme functionality on the new site. Changing the look (and width) of the site is extremely easy and fast. The screenshots that you can see demonstrate this functionality although changes to templates are only minor for testing - in the end result the themes will be quite different from each other.

Finally - the most important thing I've learned so far is KEEP YOUR CONTENT AND DESIGN SEPARATED. This is the best way to work as changing a theme or page content is super simple once the framework is in place. It's 4:14am now so I'm going to eat something and watch some TV now... then off to sleep.