How user can change color and type of ChartSeries of Telerik component in Run mode ?

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How user can change color and type of ChartSeries of Telerik component in Run mode ?
Hi
I put all types of ChartSeriesType in a combobox. How user can change it’s type(Bar, Line, …)?
Bellow line has error:
chartSerie1.Type = Telerik.Charting.ChartSeriesType + "." + my_ChartSeriesType.SelectedValue.ToString();

how can change color of every series?

Thanks very much