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