Adzoner I believe. Little trick view the source of the page:
right at the top of this:
Code:
<link rel="icon" type="image/png" href="/favicon.png" />
<link rel="stylesheet" href="http://gearpop.com/wp-content/themes/adzoner/css/config.css" />
<link rel="stylesheet" href="http://gearpop.com/wp-content/themes/adzoner/css/themes/black.css" />
<link id="mainstyle" href="http://gearpop.com/wp-content/themes/adzoner/css/ticker-style.css" rel="stylesheet" type="text/css" />
The folder that comes after themes should be the name of the theme unless he changed it for whatever reason.