1 Provides 5 themes by default, from ae.
<div data-role="page" data-theme="a|b|c|d|e">
Themes can be used for: headers, content, footers; dialogs; buttons; icons; lists; forms, and more.
2 Custom themes.
Add new styles by using theme classes in your HTML document - add class ui-bar-(az) for the toolbar and class ui-body-(az) for the content:
<style> .ui-bar-f { color:green; background-color:yellow; } .ui-body-f { font-weight:bold; color:purple; } </style>