Since the release of Odoo v8, we now have a very powerful CMS from which to build amazing websites.  A few options exist to customize the theme of our odoo website.

Build it yourself:

• Odoo v8 Documentation: Theme Tutorial | Opendays 2014 Presentation Slides
• Odoo sponsored Indigogo Campaign: Theme Designer Book (will be opensourced and made available for free in June of 2015)
• Odoo user Luke's personal guide to building themes
• Quick and dirty theme color changes in the CSS

Buy a theme already developed:

• Odoo's Theme store (Watch the 70 indigogo themes being designed on runbot [current blocked])
  • Example themes: Clean | Zap | Classy