title: How to give Style to WPF Toolkit Chart
body: <p><img src="https://i.stack.imgur.com/bMOb3.png" alt="enter image description here"></p>
  
  <p>I am using WPF Toolkit Chart with PieChart in my WPF Application.</p>
  
  <p>I want to change by default white background to Transparent in PieChart Picture..</p>
  
  <p>How to give Style to Achieve that</p>