I would like to color one data point in chart with different colour than other points. How I  can do it?

I have code like this:

                        xDataPointLayout.xNumericTimeSerie.Points[k].PE = new PaintElement(Color.Red);
                        xDataPointLayout.xNumericTimeSerie.Points[k].PE.Fill = Color.Red;

but all data point are same coloured in serie.

Is there some properties, that I should  take into account?

 Chart is compositechart with chartLayerAppearance.