@Override
		public void propertyChange( PropertyChangeEvent e ) {
			updateWindowBackground();
		}
Because there may be sent many WM_DWMCOLORIZATIONCOLORCHANGED messages,
slightly delay event firing and fire it only once (on the AWT thread).
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatWindowsNativeWindowBorder.java