title: pandas stacked bar plot - change the edgecolor of stacked bar
body: <p>Can I get the edge settings to apply on all stacked bar as one?</p>
  <p>here is an example:</p>
  <pre><code>df = pd.DataFrame([[2,5,7,11], [4,8,11,45]]).T
  ax = df.plot.bar(stacked=True)
  ax.containers[0][2].set_edgecolor('green')
  ax.containers[0][2].set_linewidth(5)
  ax.containers[1][2].set_edgecolor('green')
  ax.containers[1][2].set_linewidth(5)
  </code></pre>
  <p>this gives:
  <a href="https://i.stack.imgur.com/aS0Bt.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/aS0Bt.png" alt="enter image description here" /></a></p>
  <p>what I want is the green edge to be around the <strong>whole</strong> bar without breaking between the stacked rectangles, any ideas?</p>