title: Change color of uitableviewcell 'delete' section when in editing mode in iOS7
body: <p>I feel like this is a bit of a daft question but I can't work it out. I have a uitableview which displays sub-classed uitableviewcells. When I swipe to enable editing mode I would like to change the red color that appears to a different shade of red. Am I able to do this?</p>
  
  <p>I have tried changing background colors or adding subviews when </p>
  
  <pre><code>-(void)willTransitionToState:(UITableViewCellStateMask)state
  </code></pre>
  
  <p>is called but I can't make any thing happen to the 'delete' section only to the main cell. I also added a subview to self.editingaccessoryview in initWithCoder and I still couldn't make anything happen.</p>
  
  <p>Thanks for any help</p>