title: Change colour of UIPickerView selection indicators
body: <p>Our UIPickerView has a dark background and the selection lines are incredibly hard to see. Is there anyway to change them to a colour of my choosing?</p>
  
  <p>Update: I'm talking about the --- above and below the "Panda" item.</p>
  
  <pre><code>    Cat
      Dog
    Elephant
  -----------
     Panda
  -----------
     Bear
    Giraffe
  </code></pre>