title: PIL Image to QPixmap conversion issue
body: <p>I've been struggling with this challenge for the best of today, I've managed to get a good point using previous posts and other resources.</p>
  
  <p>I'm trying to convert a PIL.Image to a QPixmap so that I can display using a QgraphicsScene on my PyQT GUI. However when the picture is displayed the colours have changed?? Has anyone ever experienced this issue?</p>
  
  <p>The code I use for this is as below.</p>
  
  <pre><code>self.graphicsScene.clear()
  im = Image.open('Penguins.jpg')
  im = im.convert("RGBA")
  data = im.tobytes("raw","RGBA")
  qim = QtGui.QImage(data, im.size[0], im.size[1], QtGui.QImage.Format_ARGB32)
  pix = QtGui.QPixmap.fromImage(qim)
  self.graphicsScene.addPixmap(pix)
  self.graphicsView.fitInView(QtCore.QRectF(0,0,im.size[0], im.size[1]), QtCore.Qt.KeepAspectRatio)
  self.graphicsScene.update()
  </code></pre>
  
  <p>Im on windows 7 64bit, using python 3.4 with PyQt4 and pillow 3.1.0. The results im getting can be seen below.</p>
  
  <p>Original picture</p>
  
  <p><img src="https://i.stack.imgur.com/dsYXt.jpg" alt=""></p>
  
  <p>Picture displayed in GUI</p>
  
  <p><img src="https://i.stack.imgur.com/S5hld.png" alt=""></p>
  
  <p>Thanks in advance :).</p>