The renderer that is specifically will implement AcrylicMaterialBrush for the AcrylicTappedPage.cs

AcrylicTappedPageRenderer.cs

using System;
using System.IO;
using System.Threading.Tasks;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Markup;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Media.Imaging;
using Xamarin.Forms.Platform.UWP;
using XTournament.UWP.CustomRenderers;
using XTournament.CustomControls;
using XTournament.UWP.Utils;
using Windows.UI;

[assembly: ExportRenderer(typeof(AcrylicTabbedPage), typeof(AcrylicTabbedPageRenderer))]
namespace XTournament.UWP.CustomRenderers
{
    public class AcrylicTabbedPageRenderer : TabbedPageRenderer
    {
        protected async override void OnElementChanged(VisualElementChangedEventArgs e)
        {
            base.OnElementChanged(e);

            var pivotSource = Element as AcrylicTabbedPage;
            var pivotResult = Control as FormsPivot;

            if (pivotResult != null)
            {
                if (pivotSource.AcrylicSupportForUwp)
                {
                    if (Windows.Foundation.Metadata.ApiInformation.IsTypePresent("Windows.UI.Xaml.Media.XamlCompositionBrushBase"))
                    {
                        AcrylicBrush myBrush = new AcrylicBrush();
                        myBrush.BackgroundSource = (AcrylicBackgroundSource)Enum.Parse(typeof(AcrylicBackgroundSource), pivotSource.BackgroundSource.ToString());
                        myBrush.TintColor = pivotSource.TintColor.ToUwpColor();
                        myBrush.FallbackColor = pivotSource.FallbackColor.ToUwpColor();
                        myBrush.TintOpacity = pivotSource.TintOpacity;

                        pivotResult.ToolbarBackground = myBrush;
                    }
                    else
                    {
                        SolidColorBrush myBrush = new SolidColorBrush(pivotSource.TintColor.ToUwpColor());
                        pivotResult.Background = myBrush;
                    }
                }

                //taps
                await RenderHeaderTaps(pivotResult)
            }
        }

        private static async Task RenderHeaderTaps(FormsPivot pivotResult)
        {
            StringReader headerTemplateXaml = new StringReader(
               @"<DataTemplate xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation"">
                   <TextBlock FontSize=""22"" Text=""{Binding Title}"" Margin=""5,35,0,5""/>
                   </DataTemplate>"); // 5 and 35 are harcoded values to make ti appearince bettwe
            var headerTemplate = XamlReader.Load(await headerTemplateXaml.ReadToEndAsync());
            pivotResult.HeaderTemplate = headerTemplate as DataTemplate;
        }
    }
}