title: get the color for every category
body: <p>I have the following chart
  <a href="https://i.stack.imgur.com/Mpm4h.jpg" rel="nofollow noreferrer">chart</a> </p>
  
  <p>I need to get the color for every category in the legend. for example I need to know what the color that is used for the twitter platform.
  I retrieve the texts for the legend by using </p>
  
  <pre><code>legend=ax.get_legend()
    legend.texts
  </code></pre>
  
  <p>but still I need to know the color </p>