I think that you are referring to our new ChartView and not the old RadChart and this is why I changed the Product of this thread to RadChartView.
There are a few approaches into changing the appearance of a series. One is to set the Stroke property of the LineSeries. Another is to use the StrokeShapeStyle property. And another option is to use a Palette. Note that the Stroke property of the LineSeries has the highest priority, after that it is the Palette and the last is the StrokeShapeStyle.
you can read about how you can define your own palette. Let us know if you have more questions.
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