Xamarin for iOS controls contain several properties to customize the appearance of the FlexPie control. They are designed to work with both: light and dark themes. You can also change the background color, the color and width of borders and the thickness of margins of FlexPie by simply setting the desired value in the following properties:

• BackgroundColor: Changes the background color of the entire chart.
• PlotStyle.Fill: Changes the color of the chart plot area.
• PlotStyle.Stroke: Changes the color of the chart plot area border.
• PlotStyle.StrokeThickness: Changes the width of the chart plot area border.

The image below shows a customized FlexPie control.

The following code example demonstrates how to set these properties. This example use the sample created in the Quick Start section.

pieChart.PlotStyle.Fill = UIColor.Black;
pieChart.PlotStyle.Stroke = UIColor.Red;
pieChart.PlotStyle.StrokeThickness = 5;