Avalonia/samples/ControlCatalog/Pages/AcrylicPage.xaml

<UserControl x:Class="ControlCatalog.Pages.AcrylicPage"
             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"
             d:DesignHeight="800"
             d:DesignWidth="400"
             mc:Ignorable="d">
  <UserControl.Styles>
    <Style Selector="ExperimentalAcrylicBorder">
      <Setter Property="CornerRadius" Value="5" />
      <Setter Property="MaxWidth" Value="660" />
    </Style>
    <Style Selector="TextBlock">
      <Setter Property="VerticalAlignment" Value="Center" />
      <Setter Property="Foreground" Value="Black" />
    </Style>
    <Style Selector="Slider">
      <Setter Property="Margin" Value="8,0" />
      <Setter Property="Minimum" Value="0" />
      <Setter Property="Maximum" Value="1" />
      <Setter Property="LargeChange" Value="0.2" />
      <Setter Property="SmallChange" Value="0.1" />
    </Style>
  </UserControl.Styles>
  <StackPanel Spacing="20">

    <ExperimentalAcrylicBorder>
      <ExperimentalAcrylicBorder.Material>
        <ExperimentalAcrylicMaterial BackgroundSource="Digger" TintColor="White" />
      </ExperimentalAcrylicBorder.Material>
      <Grid Margin="20,10"
            ColumnDefinitions="Auto,*,Auto"
            RowDefinitions="Auto,Auto">
        <TextBlock Grid.Row="0"
                   Grid.Column="0"
                   Text="TintOpacity" />
        <Slider Name="TintOpacitySlider"
                Grid.Row="0"
                Grid.Column="1"
                Value="0.9" />
        <TextBlock Grid.Row="0"
                   Grid.Column="2"
                   Text="{Binding #TintOpacitySlider.Value, StringFormat=\{0:0.#\}}" />
        <TextBlock Grid.Row="1"
                   Grid.Column="0"
                   Text="MaterialOpacity" />
        <Slider Name="MaterialOpacitySlider"
                Grid.Row="1"
                Grid.Column="1"
                Value="0.8" />
        <TextBlock Grid.Row="1"
                   Grid.Column="2"
                   Text="{Binding #MaterialOpacitySlider.Value, StringFormat=\{0:0.#\}}" />
      </Grid>
    </ExperimentalAcrylicBorder>

    <UniformGrid x:Name="BordersGrid"
                 HorizontalAlignment="Stretch"
                 MaxWidth="660"
                 Columns="3">
      <UniformGrid.Styles>
        <Style Selector="ExperimentalAcrylicBorder">
          <Setter Property="Height" Value="{Binding $self.Bounds.Width}" />
          <Setter Property="Margin" Value="10" />
          <Setter Property="MaxWidth" Value="200" />
        </Style>
      </UniformGrid.Styles>
      <ExperimentalAcrylicBorder>
        <ExperimentalAcrylicBorder.Material>
          <ExperimentalAcrylicMaterial BackgroundSource="Digger"
                                       MaterialOpacity="{Binding #MaterialOpacitySlider.Value}"
                                       TintColor="#FF0000"
                                       TintOpacity="{Binding #TintOpacitySlider.Value}" />
        </ExperimentalAcrylicBorder.Material>
      </ExperimentalAcrylicBorder>

      <ExperimentalAcrylicBorder>
        <ExperimentalAcrylicBorder.Material>
          <ExperimentalAcrylicMaterial BackgroundSource="Digger"
                                       MaterialOpacity="{Binding #MaterialOpacitySlider.Value}"
                                       TintColor="#00FF00"
                                       TintOpacity="{Binding #TintOpacitySlider.Value}" />
        </ExperimentalAcrylicBorder.Material>
      </ExperimentalAcrylicBorder>

      <ExperimentalAcrylicBorder>
        <ExperimentalAcrylicBorder.Material>
          <ExperimentalAcrylicMaterial BackgroundSource="Digger"
                                       MaterialOpacity="{Binding #MaterialOpacitySlider.Value}"
                                       TintColor="#000000"
                                       TintOpacity="{Binding #TintOpacitySlider.Value}" />
        </ExperimentalAcrylicBorder.Material>
      </ExperimentalAcrylicBorder>

      <ExperimentalAcrylicBorder>
        <ExperimentalAcrylicBorder.Material>
          <ExperimentalAcrylicMaterial BackgroundSource="Digger"
                                       MaterialOpacity="{Binding #MaterialOpacitySlider.Value}"
                                       TintColor="#0000FF"
                                       TintOpacity="{Binding #TintOpacitySlider.Value}" />
        </ExperimentalAcrylicBorder.Material>
      </ExperimentalAcrylicBorder>

      <ExperimentalAcrylicBorder>
        <ExperimentalAcrylicBorder.Material>
          <ExperimentalAcrylicMaterial BackgroundSource="Digger"
                                       MaterialOpacity="{Binding #MaterialOpacitySlider.Value}"
                                       TintColor="#FFFF00"
                                       TintOpacity="{Binding #TintOpacitySlider.Value}" />
        </ExperimentalAcrylicBorder.Material>
      </ExperimentalAcrylicBorder>

      <ExperimentalAcrylicBorder>
        <ExperimentalAcrylicBorder.Material>
          <ExperimentalAcrylicMaterial BackgroundSource="Digger"
                                       MaterialOpacity="{Binding #MaterialOpacitySlider.Value}"
                                       TintColor="#000000"
                                       TintOpacity="{Binding #TintOpacitySlider.Value}" />
        </ExperimentalAcrylicBorder.Material>
      </ExperimentalAcrylicBorder>


      <ExperimentalAcrylicBorder>
        <ExperimentalAcrylicBorder.Material>
          <ExperimentalAcrylicMaterial BackgroundSource="Digger"
                                       MaterialOpacity="{Binding #MaterialOpacitySlider.Value}"
                                       TintColor="White"
                                       TintOpacity="{Binding #TintOpacitySlider.Value}" />
        </ExperimentalAcrylicBorder.Material>
      </ExperimentalAcrylicBorder>

      <ExperimentalAcrylicBorder>
        <ExperimentalAcrylicBorder.Material>
          <ExperimentalAcrylicMaterial BackgroundSource="Digger"
                                       MaterialOpacity="{Binding #MaterialOpacitySlider.Value}"
                                       TintColor="#3c3c3c"
                                       TintOpacity="{Binding #TintOpacitySlider.Value}" />
        </ExperimentalAcrylicBorder.Material>
      </ExperimentalAcrylicBorder>

      <ExperimentalAcrylicBorder>
        <ExperimentalAcrylicBorder.Material>
          <ExperimentalAcrylicMaterial BackgroundSource="Digger"
                                       MaterialOpacity="{Binding #MaterialOpacitySlider.Value}"
                                       TintColor="White"
                                       TintOpacity="{Binding #TintOpacitySlider.Value}" />
        </ExperimentalAcrylicBorder.Material>
      </ExperimentalAcrylicBorder>

    </UniformGrid>


    <ExperimentalAcrylicBorder Width="{Binding #BordersGrid.Bounds.Width}"
                               Height="160">
      <ExperimentalAcrylicBorder.Material>
        <ExperimentalAcrylicMaterial BackgroundSource="Digger"
                                     MaterialOpacity="{Binding #MaterialOpacitySlider.Value}"
                                     TintColor="Red"
                                     TintOpacity="{Binding #TintOpacitySlider.Value}" />
      </ExperimentalAcrylicBorder.Material>
    </ExperimentalAcrylicBorder>
  </StackPanel>

</UserControl>