title: White background is showing above UISearchBar for iOS7
body: <p>My viewController has a UISearchBar set as the header view of a UITableView.</p>
  
  <pre><code>self.tableView.tableHeaderView = self.searchBar;
  </code></pre>
  
  <p>In iOS7, pulling down beyond the UISearchBar reveals a white space that does not obey the dark color set using <em>self.tableView.backgroundColor</em>.</p>
  
  <p><img src="https://i.stack.imgur.com/gyCLE.jpg" alt="enter image description here"></p>
  
  <p>Is there a way to get rid of the white space?</p>