Please accept my apologies. I did not understand your requirement and have mislead you with my previous reply.
Let me make sure that I understand what you need. As far as I understand you need to change the color of the outer color of the slices. The light green color on the attached picture.
If you need to change the color only, you should use the DoughnutSeries.HighlightBrush
property. It controls the color of the element used to visualize that component. This is the recommended way to change its color.
If however, you need to customize it in another way, I would like to kindly ask you to elaborate more on that requirement.
I hope this information is helpful.
Pavel R. Pavlov
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