title: Tkinter contents of both widgets visible when overlapping
body: <p>So, I am trying to make a video game in Tkinter (no, I don't want to use PyGame), but I have ran into a bit of a problem.</p>
  
  <p>I have realized that sometimes you may want to have two widgets overlap (e.g. sprite on top of background) but have the contents of both widgets to be visible. For example, I might have a sprite with transparent sections.</p>
  
  <p>How do I set the "background" option of a widget so that there is no visible background?</p>
  
  <p>Note: "you can't do this" answers are acceptable.</p>