The JA Purity template has a few options. One of them, Beez, is provided merely as an example of how to build a template (it’s hideous). The other two, JA Purity and Rhuk Milkyway, are more usable. Right-click on the header image to bring up the context menu, and select “Inspect element”: The Firebug window will open in your browser, and you’ll see something like this: Using Firebug, you can easily detect where the relevant CSS is located and start experimenting with changes. Template Overrides Link There is a /templates/ja_purity2/html/ folder, where the template overrides are stored.