Flash all windows RED on language error or server crash

flash-red-on-error

// add this to your startup file
{
	var flash = {
		Window.allWindows.do { arg w;
			var c;
			c = w.background;
			w.background = Color.red;
			{ w.background = c; }.defer(0.5);
		};
		nil
	};

	if(thisThread.exceptionHandler.isNil,{
		thisThread.exceptionHandler = { |error|
			if(Error.handling,{ error.reportError; this.halt; });
			Error.handling = true;
			flash.defer;
			nil.handleError(error);
		};
	});

	if(NotificationCenter.registrationExists(Server.default,\didQuit,this).not,{
		NotificationCenter.register(Server.default,\didQuit,this,{
			"SERVER QUIT".warn;
			flash.defer
		});
	});

}.defer(0.5);