title: UIToolbar incorrect colour in iOS7
body: <p>When I set the bottom <code>UIToolbar</code> to black on the view controller, it appears as a more greyish colour (the same thing happens with other colours--it sort of fades them out). What I assume is happening is that in <code>iOS7</code> the toolbar seems to adapt the colour of what is beneath it (currently white) which makes for the duller colour.</p>
  
  <p>I've updated the view controller so that the "extended edges" options are turned off but still get this effect. Has anyone else had this issue yet?</p>
  
  <p>UPDATE: 
  I resolved the issue by setting the background colour of the UIToolbar to black (something I haven't had to do in previous versions of iOS). If anyone can think of a better solution, let me know.</p>