title: How do I get the background color of a Tkinter Canvas widget
body: <p>I need to create a rectangle in a Canvas widget using the background color as the fill color. I don't care what color the background of the Canvas is, I just want to get the color. So the relevant bit of code would look like this:</p>
  
  <pre><code>myCanvas.create_rectangle(x0, y0, x1, y1, outline=myCanvas.bgcolor(),
                            fill=myCanvas.bgcolor())
  </code></pre>
  
  <p>Where naturally <code>myCanvas.bgcolor()</code> is what I'm after. </p>
  
  <p>I've seen lots of examples of setting this and other parameters, but none for getting.</p>