title: How to display graph with defined color when data is not available in Victory Pie?
body: <p>Right now when I set the y's value 0 then the graph will not be visible but here I want to display the circle or victory pie gray in color when y's all values are 0. 
  Is there any path in victory Pie to display the graph with the gray color when data is not available?</p>
  
  <pre><code>&lt;VictoryPie
   colorScale={["tomato", "orange", "gold"]}
     data={[
      { x: "Cats", y: 35 },
      { x: "Dogs", y: 40 },
      { x: "Birds", y: 55 }
    ]}
  /&gt;
  </code></pre>
  
  <p>Right now graph looks like this when data is available
  <a href="https://i.stack.imgur.com/CMRTt.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/CMRTt.png" alt="enter image description here"></a></p>
  
  <p>The expected output of a graph should be like below when data is not available or y's values are 0.</p>
  
  <p><a href="https://i.stack.imgur.com/6AvMK.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6AvMK.png" alt="enter image description here"></a></p>