title: Difference between deviceRGB and calibratedRGB in Interface Builder?
body: <p>In my storyboard, I see some colors with a <code>colorSpace</code> of <code>deviceRGB</code> and I see others with a color space of <code>calibratedRGB</code>.  I've never specified colors to use either of these, it's just magically set.  The thing is, it seems random which color is specified with which.</p>
  
  <p>What's the difference?<br>
  How does Interface Builder know which to use?</p>
  
  <pre><code>&lt;color key="backgroundColor" red="1" green="0.75" blue="0.75" alpha="1" colorSpace="deviceRGB"/&gt;
  </code></pre>
  
  <p>versus</p>
  
  <pre><code>&lt;color key="backgroundColor" red="1" green="0.75" blue="0.75" alpha="1" colorSpace="calibratedRGB"/&gt;
  </code></pre>