change icon background jquery mobile

HTML

<script src="http://code.jquery.com/mobile/1.3.1/jquery.mobile-1.3.1.min.js"></script>
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.3.1/jquery.mobile-1.3.1.min.css">
<body>
 <div data-role="page">


<div data-role="content">
     <a href="#" data-role="button" data-icon="home" data-inline="true" data-iconpos="notext"></a></div>

    </div>
</body>