title: How to change plot background color?
body: <p>I am making a scatter plot in matplotlib and need to change the background of the actual plot to black.  I know how to change the face color of the plot using:</p>
  
  <pre><code>fig = plt.figure()
  fig.patch.set_facecolor('xkcd:mint green')
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/UN6YB.png" rel="noreferrer"><img src="https://i.stack.imgur.com/UN6YB.png" alt="enter image description here"></a></p>
  
  <p>My issue is that this changes the color of the space around the plot. How to I change the actual background color of the plot?</p>