title: highlighted shadow color
body: <p>How to set the shadowColor of a highlighted Text?</p>
  
  <pre><code>titleLabel.textColor = [UIColor colorWithRed:20.0f/255.0f green:50.0f/255.0f blue:90.0f/255.0f alpha:1.0f];
  titleLabel.highlightedTextColor = [UIColor whiteColor];
  titleLabel.shadowColor = [UIColor whiteColor];
  titleLabel.shadowOffset = CGSizeMake(0, 1.0);
  </code></pre>
  
  <p>I'm looking for something like: <code>titleLabel.highlightedTextColor.shadowColor = [UIColor blackColor];</code></p>