Creating a shadow Backdrop using xaml in xamarin forms without having to resort to native implementation

Xamarin Forms Xaml BackDrop Shadow

        <Frame HorizontalOptions="FillAndExpand" Padding="1,1,1,1" Margin="5,5,5,5" HasShadow="True">
            <Frame.BackgroundColor>
                <Color x:FactoryMethod="FromRgba">
                    <x:Arguments>
                        <x:Int32>0</x:Int32>
                        <x:Int32>0</x:Int32>
                        <x:Int32>0</x:Int32>
                        <x:Int32>128</x:Int32>
                    </x:Arguments>
                </Color>
            </Frame.BackgroundColor>
        </Frame>