Maui TitleBar transparency & changing Caption Control colors?

builder.ConfigureLifecycleEvents(events =>
{
    events.AddWindows(wndLifeCycleBuilder =>
    {
        wndLifeCycleBuilder.OnWindowCreated(window =>
        {
            window.ExtendsContentIntoTitleBar = true;
            IntPtr nativeWindowHandle = WinRT.Interop.WindowNative.GetWindowHandle(window);
            WindowId win32WindowsId = Win32Interop.GetWindowIdFromWindow(nativeWindowHandle);
            AppWindow winuiAppWindow = AppWindow.GetFromWindowId(win32WindowsId);
    
            if (winuiAppWindow.Presenter is OverlappedPresenter p)
            {
                p.SetBorderAndTitleBar(false, false);
            }
            
            window.SetTitleBar(new Microsoft.UI.Xaml.Controls.Grid());
        });
    });
});