void collection_listbox_Loaded(object sender, RoutedEventArgs e)
{
//GradientStopCollection gsc = new GradientStopCollection();
//gsc.Add(new GradientStop(Colors.LightGray, 0.0));
//gsc.Add(new GradientStop(Colors.LightGray, (this.Height - 18) / this.Height - 0.01));
//gsc.Add(new GradientStop(Colors.Transparent, (this.Height - 18) / this.Height + 0.02));
//gsc.Add(new GradientStop(Colors.Transparent, 1.0));
//LinearGradientBrush myBrush = new LinearGradientBrush(gsc, 90);
//this.contributions.Background = myBrush;
this.contributions.Background = Brushes.LightGray;
}