ShrlAlgoToolkit/WPFluent/Controls/Page/Page.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <Style TargetType="{x:Type Page}" x:Key="DefaultPageStyle">
        <Setter Property="Control.Foreground">
            <Setter.Value>
                <SolidColorBrush Color="{DynamicResource TextFillColorPrimary}" />
            </Setter.Value>
        </Setter>
        <Setter Property="Background" Value="Transparent" />
        <!--  The Display option causes a large aliasing effect  -->
        <!-- <Setter Property="TextOptions.TextFormattingMode" Value="Ideal" /> -->
        <Setter Property="Focusable" Value="False" />
        <Setter Property="SnapsToDevicePixels" Value="True" />
        <Setter Property="OverridesDefaultStyle" Value="True" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type Page}">
                    <Grid>
                        <ContentPresenter
                            Content="{TemplateBinding ContentControl.Content}"
                            HorizontalAlignment="Stretch"
                            TextElement.Foreground="{TemplateBinding Control.Foreground}"
                            VerticalAlignment="Stretch" />
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <Style BasedOn="{StaticResource DefaultPageStyle}" TargetType="{x:Type Page}" />

</ResourceDictionary>