title: Pandas Pivot Table and Matplotlib bar
body: <p>I'm trying to use Matplotlib to make a Bar graph with different color.
  So far, I have a Pandas Pivot Table which looks like this:</p>
  
  <pre><code>              productType
  physicalType             
  Chassis                54
  Fan                   295
  Module                154
  Power Supply           91
  </code></pre>
  
  <p>I can get a Bar graph but the color are all the same for each series.
  How can I have different colors for different series ?</p>
  
  <p>Thanks,</p>