Работа с OxyPlot wpf

 
AhuPlotModel = new PlotModel
 {
     Background = OxyColors.Aqua
 };

 AhuPlotModel = new PlotModel
 {
    Background = OxyColors.Aqua
 };

AhuPlotModel = new PlotModel
 {
     Background = OxyColors.White,
 };
 
 List<OxyColor> listOfColors = new List<OxyColor> { OxyColor.FromAColor(50, OxyColors.Yellow), OxyColor.FromAColor(50, OxyColors.Red), OxyColor.FromAColor(50, OxyColors.Blue), OxyColor.FromAColor(50, OxyColors.Green) };
 
 for (byte i = 0; i < 4; i++)
     AhuPlotModel.Series.Add(new AreaSeries { Color = listOfColors[i], Fill = listOfColors[i], });
 
 (AhuPlotModel.Series[0] as AreaSeries).Points.Add(new DataPoint(10, 11));
 (AhuPlotModel.Series[0] as AreaSeries).Points.Add(new DataPoint(20, 15));
 (AhuPlotModel.Series[0] as AreaSeries).Points.Add(new DataPoint(30, 16));
 (AhuPlotModel.Series[0] as AreaSeries).Points.Add(new DataPoint(40, 12));
 (AhuPlotModel.Series[0] as AreaSeries).Points.Add(new DataPoint(50, 11));
 
 (AhuPlotModel.Series[1] as AreaSeries).Points.Add(new DataPoint(10, 11));
 (AhuPlotModel.Series[1] as AreaSeries).Points.Add(new DataPoint(20, 12));
 (AhuPlotModel.Series[1] as AreaSeries).Points.Add(new DataPoint(30, 16));
 (AhuPlotModel.Series[1] as AreaSeries).Points.Add(new DataPoint(40, 15));
 (AhuPlotModel.Series[1] as AreaSeries).Points.Add(new DataPoint(50, 11));
 
 (AhuPlotModel.Series[2] as AreaSeries).Points.Add(new DataPoint(10, 11));
 (AhuPlotModel.Series[2] as AreaSeries).Points.Add(new DataPoint(20, 11));
 (AhuPlotModel.Series[2] as AreaSeries).Points.Add(new DataPoint(30, 15));
 (AhuPlotModel.Series[2] as AreaSeries).Points.Add(new DataPoint(40, 12));
 (AhuPlotModel.Series[2] as AreaSeries).Points.Add(new DataPoint(50, 11));
 
 (AhuPlotModel.Series[3] as AreaSeries).Points.Add(new DataPoint(10, 11));
 (AhuPlotModel.Series[3] as AreaSeries).Points.Add(new DataPoint(20, 13));
 (AhuPlotModel.Series[3] as AreaSeries).Points.Add(new DataPoint(30, 12));
 (AhuPlotModel.Series[3] as AreaSeries).Points.Add(new DataPoint(40, 15));
 (AhuPlotModel.Series[3] as AreaSeries).Points.Add(new DataPoint(50, 11));