Avalonia/samples/ControlCatalog/Pages/AcrylicPage.xaml

<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="ControlCatalog.Pages.AcrylicPage">
  <Border Padding="20" HorizontalAlignment="Center">
    <StackPanel Spacing="20">

      <Border Width="660" CornerRadius="5" BoxShadow="2 2 16 0 Black">
        <Border.Background>
          <ExperimentalAcrylicBrush
            TintColor="White"
            BackgroundSource="Digger" />
        </Border.Background>
        <StackPanel Spacing="20" Margin="40">
          <TextBlock Text="TintOpacity" Foreground="Black" />
          <Slider Name="TintOpacitySlider" Minimum="0" Maximum="1" Value="0.9" />
          <TextBlock Text="{Binding #TintOpacitySlider.Value}" Foreground="Black" />
          <TextBlock Text="TintLuminocity" Foreground="Black" />
          <Slider Name="TintLuminositySlider" Minimum="0" Maximum="1" Value="0.8" />
          <TextBlock Text="{Binding #TintLuminositySlider.Value}" Foreground="Black" />
        </StackPanel>
      </Border>

      <StackPanel Orientation="Horizontal" Spacing="20">
        <Border Height="200" Width="200" CornerRadius="5" BoxShadow="2 2 16 0 Black">
          <Border.Background>
            <ExperimentalAcrylicBrush
              TintColor="#FF0000"
              TintOpacity="{Binding #TintOpacitySlider.Value}"
              TintLuminosityOpacity="{Binding #TintLuminositySlider.Value}"
              BackgroundSource="Digger" />
          </Border.Background>
        </Border>

        <Border Height="200" Width="200" CornerRadius="5" BoxShadow="2 2 16 0 Black">
          <Border.Background>
            <ExperimentalAcrylicBrush
              TintColor="#00FF00"
              TintOpacity="{Binding #TintOpacitySlider.Value}"
              TintLuminosityOpacity="{Binding #TintLuminositySlider.Value}"
              BackgroundSource="Digger" />
          </Border.Background>
        </Border>

        <Border Height="200" Width="200" CornerRadius="5" BoxShadow="2 2 16 0 Black">
          <Border.Background>
            <ExperimentalAcrylicBrush
              TintColor="#000000"
              TintOpacity="{Binding #TintOpacitySlider.Value}"
              TintLuminosityOpacity="{Binding #TintLuminositySlider.Value}"
              BackgroundSource="Digger" />
          </Border.Background>
        </Border>
      </StackPanel>

      <StackPanel Orientation="Horizontal" Spacing="20">
        <Border Height="200" Width="200" CornerRadius="5" BoxShadow="2 2 16 0 Black">
          <Border.Background>
            <ExperimentalAcrylicBrush
              TintColor="#0000FF"
              TintOpacity="{Binding #TintOpacitySlider.Value}"
              TintLuminosityOpacity="{Binding #TintLuminositySlider.Value}"
              BackgroundSource="Digger" />
          </Border.Background>
        </Border>

        <Border Height="200" Width="200" CornerRadius="5" BoxShadow="2 2 16 0 Black">
          <Border.Background>
            <ExperimentalAcrylicBrush
              TintColor="#FFFF00"
              TintOpacity="{Binding #TintOpacitySlider.Value}"
              TintLuminosityOpacity="{Binding #TintLuminositySlider.Value}"
              BackgroundSource="Digger" />
          </Border.Background>
        </Border>

        <Border Height="200" Width="200" CornerRadius="5" BoxShadow="2 2 16 0 Black">
          <Border.Background>
            <ExperimentalAcrylicBrush
              TintColor="#000000"
              TintOpacity="{Binding #TintOpacitySlider.Value}"
              TintLuminosityOpacity="{Binding #TintLuminositySlider.Value}"
              BackgroundSource="Digger" />
          </Border.Background>
        </Border>
      </StackPanel>

      <StackPanel Orientation="Horizontal" Spacing="20">
        <Border Height="200" Width="200" CornerRadius="5" BoxShadow="2 2 16 0 Black">
          <Border.Background>
            <ExperimentalAcrylicBrush
              TintColor="White"
              TintOpacity="{Binding #TintOpacitySlider.Value}"
              TintLuminosityOpacity="{Binding #TintLuminositySlider.Value}"
              BackgroundSource="Digger" />
          </Border.Background>
        </Border>

        <Border Height="200" Width="200" CornerRadius="5" BoxShadow="2 2 16 0 Black">
          <Border.Background>
            <ExperimentalAcrylicBrush
              TintColor="#3c3c3c"
              TintOpacity="{Binding #TintOpacitySlider.Value}"
              TintLuminosityOpacity="{Binding #TintLuminositySlider.Value}"
              BackgroundSource="Digger" />
          </Border.Background>
        </Border>

        <Border Height="200" Width="200" CornerRadius="5" BoxShadow="2 2 16 0 Black">
          <Border.Background>
            <ExperimentalAcrylicBrush
              TintColor="White"
              TintOpacity="{Binding #TintOpacitySlider.Value}"
              TintLuminosityOpacity="{Binding #TintLuminositySlider.Value}"
              BackgroundSource="Digger" />
          </Border.Background>
        </Border>
      </StackPanel>

      <Border Height="200" Width="660" CornerRadius="5" BoxShadow="2 2 16 0 Black">
        <Border.Background>
          <ExperimentalAcrylicBrush
            TintColor="Red"
            TintOpacity="{Binding #TintOpacitySlider.Value}"
            TintLuminosityOpacity="{Binding #TintLuminositySlider.Value}"
            BackgroundSource="Digger" />
        </Border.Background>
      </Border>
    </StackPanel>
  </Border>
</UserControl>