/// <summary>
        /// This is called when the game should draw itself.
        /// </summary>
        /// <param name="gameTime">Provides a snapshot of timing values.</param>
        protected override void Draw(GameTime gameTime)
        {
            GraphicsDevice.Clear(new Color(30, 30, 30));

            // DRAW CONTROL MANAGER
            WindowContentManager.Draw();

            // Service Provider:  Last so that mouse on top:
            ServiceProvider.Draw(gameTime);

            base.Draw(gameTime);
        }