WebExpress.TabView.ChangeColor C# (CSharp) Method

        public async Task ChangeColor()
        {
            try
            {
                await Dispatcher.BeginInvoke((Action) (() =>
                {
                    Thread thread = new Thread(new ThreadStart(delegate ()
                    {
                        System.Threading.Thread.Sleep(200); 
                            this.Dispatcher.BeginInvoke(DispatcherPriority.Send,
                                new ThreadStart(async delegate ()
                                {
                                    var topLeftCorner = WebView.PointToScreen(new System.Windows.Point(0, 0));
                                    var topLeftGdiPoint = new System.Drawing.Point((int)topLeftCorner.X, (int)topLeftCorner.Y);
                                    var size = new System.Drawing.Size((int)WebView.ActualWidth, (int)WebView.ActualHeight);
                                    Bitmap screenShot = new Bitmap((int)WebView.ActualWidth, (int)WebView.ActualHeight);
                                    using (var graphics = Graphics.FromImage(screenShot))
                                    {
                                        graphics.CopyFromScreen(topLeftGdiPoint, new System.Drawing.Point(), size,
                                            CopyPixelOperation.SourceCopy);
                                    }
                                    SolidColorBrush oldBrush = (SolidColorBrush)Panel.Background;
                                    SolidColorBrush brush = new SolidColorBrush(StaticFunctions.ToMediaColor(screenShot.GetPixel(1, 1)));
                                    StaticFunctions.AnimateColor(oldBrush, StaticFunctions.ToMediaColor(screenShot.GetPixel(1, 1)), Panel, 0.1);
                                    mainWindow.TabBar.getTabFromForm(this).Color = brush;
                                    mainWindow.TabBar.getTabFromForm(this).refreshColor();

                                    StaticFunctions.AnimateColor(oldBrush, StaticFunctions.ToMediaColor(screenShot.GetPixel(1, 1)), textBox, 0.1);
                                    StaticFunctions.AnimateColor(oldBrush, StaticFunctions.ToMediaColor(screenShot.GetPixel(1, 1)), ListContainer, 0.1);
                                    StaticFunctions.AnimateColor(oldBrush, StaticFunctions.ToMediaColor(screenShot.GetPixel(1, 1)), MagicBox, 0.1);


                                   await ContrastColor(screenShot.GetPixel(1, 1));
                                    this.Refresh();
                                }));
                    }));
                    thread.Name = "thread-UpdateText";
                    thread.Start();
                    

                }));
            }
            catch (Exception ex)
            {
                Console.WriteLine("Change color error: " + ex.Message + " " + ex.Data);
            }
        }

        private async void Me_MouseDown(object sender, MouseButtonEventArgs e)
        {
            TabBar tb = this.FindParent <TabBar>();

            tb.SelectTab(this);

            if (form.GetType() == typeof(TabView))
            {
                TabView tv = (form as TabView);
                await tv.ChangeColor();
            }
        }