void ColorTap(UITapGestureRecognizer tapGestureRecognizer)
{
if (tapGestureRecognizer.State != UIGestureRecognizerState.Ended)
{
return;
}
CGPoint tapLocation = tapGestureRecognizer.LocationInView(ContentView);
UIView view = ContentView.HitTest(tapLocation, null);
// If the user tapped on a color (identified by its tag), notify the delegate.
ListColor color = (ListColor)(int)view.Tag;
SelectedColor = color;
ViewController.OnListColorCellDidChangeSelectedColor(SelectedColor);
}