Quickly add a theme to your application and change the theme at any time.
Use the helper use_theme(theme_name) in your tag.
For example:
<%= use_theme('bitbucket') %>
To use the default layout for these themes, add the following to application_controller.rb
layout 'themes'
bitbucket - Gray gradient header bar and white below
slicehost - Blue menu with hover effects and white header
Please help me add additional themes to this plugin. Let me know if you are wanting to contribute, and I will add you as a contributor.