title: UIButton colour changing
body: <p>I am making an 'info' button, using Xcode's built in button type, "UIButtonTypeInfoLight".</p>
  
  <p>This is my code:</p>
  
  <pre><code>self.helpButton= [UIButton buttonWithType:UIButtonTypeInfoLight];
  [self.helpButton addTarget:self
             action:@selector(showHelp)
   forControlEvents:UIControlEventTouchUpInside];
  self.helpButton.frame = CGRectMake(280.0, 440.0, 20, 20);
  [self.view addSubview:self.helpButton];
  </code></pre>
  
  <p>However, there is a problem. My app contains a scroll view with 3 different view controllers. One blue, one red, and one green.</p>
  
  <p>The icon looks fine on the page that the app opens up with (blue):</p>
  
  <p><img src="https://i.stack.imgur.com/fZSjS.png" alt="enter image description here"></p>
  
  <p>However, when i swipe to the green or red pages, the button seems to stay blue, and not transparent like I want it to be:</p>
  
  <p><img src="https://i.stack.imgur.com/a4VOz.png" alt="enter image description here">
  <img src="https://i.stack.imgur.com/30mEV.png" alt="enter image description here"></p>
  
  <p>How can I stop it from doing this? I just want the icon to be transparent?</p>