Apple-specific meta tags are described here.
apple-mobile-web-app-status-bar-style
Sets the style of the status bar for a web application.
Syntax
<meta name=”apple-mobile-web-app-status-bar-style” content=”black”>
- This meta tag has no effect unless you first specify full-screen mode as described in “url.”If 
contentis set todefault, the status bar appears normal. If set toblack, the status bar has a black background. If set toblack-translucent, the status bar is black and translucent. If set todefaultorblack, the web content is displayed below the status bar. If set toblack-translucent, the web content is displayed on the entire screen, partially obscured by the status bar. The default value isdefault. 
- Available in iOS 2.1 and later.
 
- Apple extension.