private void OnLoaded(object sender, RoutedEventArgs routedEventArgs)
{
    var xyzDataSeries3D = new XyzDataSeries3D<double>() {SeriesName = "Colorful Bubble!"};
    const int count = 250;
    var random = new Random(0);
    for (var i = 0; i < count; i++)
    {
        var x = DataManager.Instance.GetGaussianRandomNumber(5, 1.5);
        var y = DataManager.Instance.GetGaussianRandomNumber(5, 1.5);
        var z = DataManager.Instance.GetGaussianRandomNumber(5, 1.5);
        // Scale is a multiplier used to increase/decrease ScatterRenderableSeries3D.ScatterPointSize
        var scale = (float) ((random.NextDouble() + 0.5)*3.0);
        // Color is applied to PointMetadata3D and overrides the default ScatterRenderableSeries.Stroke property
        Color? randomColor = Color.FromArgb(0xFF, (byte) random.Next(50, 255), (byte) random.Next(50, 255), (byte) random.Next(50, 255));
               
        // To declare scale and colour, add a VertextData class as the w (fourth) parameter.
        // The PointMetadata3D class also has other properties defining the behaviour of the XYZ point
        xyzDataSeries3D.Append(x, y, z, new PointMetadata3D(randomColor, scale));
    }
    ScatterSeries3D.DataSeries = xyzDataSeries3D;
    PointMarkerCombo.SelectedIndex = 0;
}