title: UIColor colorWithRed:green:blue: always produces black
body: <p>I have come across many instances when I try to make custom color through code and the result is quite different from Photoshop, e.g  </p>
  
  <pre><code>[UIColor colorWithRed:(160/255) green:(97/255) blue:(5/255) alpha:1];
  </code></pre>
  
  <p>the resultant color is blackish, whereas it should me something like yellow. When working using sliders, the result is as expected.</p>
  
  <p>Is there a problem with my Xcode or it is a general issue?</p>