How can I set a WPF control’s color to a system color programmatically, so that it updates on color scheme changes?

I just found an ugly solution:

grid1.SetResourceReference(
    Control.BackgroundProperty,
    SystemColors.DesktopBrushKey);

I hope someone will post a better one (I’d like to see something like grid1.Background = BackgroundBrush, because the syntax of SetResourceReference is a step backwards from Windows Forms).