title: How to create pie chart using wpftoolkit with shades of only one colour
body: <p>I am new to wpf, I am using wpf toolkit to create pie chart. I have created pie chart using wpf toolkit but my problem is that I have to create Pie chart only with a particular color shade. Say for example green, then my pie chart should use shades of green only. Also this assignment of color to pie pieces should be done pro grammatically.
  Can anyone please advice how I go about it?</p>