title: Matplotlib pyqt Navigation toolbar change background color of "figure options"
body: <p>I implemented the matplotlib plots and navigation toolbar in pyqt4 GUI.
  How do I change the background color of "Figure options" in the toolbar?</p>
  
  <p><a href="https://i.stack.imgur.com/TcZzW.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/TcZzW.png" alt="enter image description here"></a></p>
  
  <p>In the above picture with a gray background, everything looks good. The same "Figure options" with a dark background looks like the figure below</p>
  
  <p><a href="https://i.stack.imgur.com/arHBG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/arHBG.png" alt="enter image description here"></a></p>
  
  <p>How do I change the background color of the "Figure options?"</p>
  
  <p>The navigation toolbar is implemented in the following way</p>
  
  <pre class="lang-py prettyprint-override"><code>from matplotlib.backends.backend_qt4agg import NavigationToolbar2QT as NavigationToolbar
  
  self.figure = Figure(figsize=(6,7))
  self.canvas = FigureCanvas(self.figure)
  self.toolbar = NavigationToolbar(self.canvas, self)
  </code></pre>