/// <summary>
        /// Render a window frame
        /// </summary>
        /// <param name="windowFrame"></param>
        /// <param name="output"></param>
        public static void Render(WindowFrame windowFrame, TextWriter output)
        {
            var width             = Console.WindowWidth;
            var height            = Console.WindowHeight;
            var row               = new string(' ', width);
            var lastRow           = new string(' ', width - 1);
            var originalBackColor = Console.BackgroundColor;

            ColorTracker.SetBackColor(windowFrame.Color);
            Console.SetCursorPosition(0, 0);
            output.Write(row);
            Console.SetCursorPosition(0, height - 1);
            output.Write(lastRow);

            // write vertical bars
            for (var y = 1; y < height - 1; y++)
            {
                Console.SetCursorPosition(0, y);
                output.Write(' ');
                Console.SetCursorPosition(width - 1, y);
                output.Write(' ');
            }
            Console.BackgroundColor = originalBackColor;
        }
 /// <summary>
 /// Set a window frame
 /// </summary>
 /// <param name="color"></param>
 /// <param name="size"></param>
 public void SetWindowFrame(Color color, int size)
 {
     WindowFrame = new WindowFrame(color, size);
 }