title: "shaded" horizontal bars in matplotlib
body: <p>I'm using a bar plot like this
  <a href="http://matplotlib.org/examples/pylab_examples/barchart_demo2.html" rel="nofollow">http://matplotlib.org/examples/pylab_examples/barchart_demo2.html</a></p>
  
  <p>and I'd like to change the way the bars look, e.g. giving some three-dimensionality look to the bars.
  What I have in mind is something like this:
  <a href="http://tinyurl.com/oczlafw" rel="nofollow">http://tinyurl.com/oczlafw</a></p>
  
  <p>Only, I don't know where to start. Maybe repeating the same image along the bar?</p>
  
  <p>Thanks for the help
  AC</p>