title: Change the color of a link in an NSMutableAttributedString
body: <p>I have the following code but my links are always blue. How do I cange the color of them?</p>
  
  <pre><code>[_string addAttribute:NSLinkAttributeName value:tag range:NSMakeRange(position, length)];
  [_string addAttribute:NSFontAttributeName value:[UIFont fontWithName:@"HelveticaNeue-Bold" size:(12.0)] range:NSMakeRange(position, length)];
  [_string addAttribute:NSStrokeColorAttributeName value:[UIColor greenColor] range:NSMakeRange(position, length)];
  </code></pre>
  
  <p>_string is a NSMutableAttributedString and the position and length work fine.</p>