Want to design your own custom Bootstrap theme? It's really pretty easy.
1. Go to http://getbootstrap.com/customize/ and build your theme. When you've completed the theme, choose DOWNLOAD and save the boostrap folder to your Mac.
2. Open the bootstrap folder and locate bootstrap.css. Drag this file into the RESOURCES are of your RapidWeaver project.
3. Go to Page Inspector -> Header -> CSS
4. Paste in the following into the CSS field: