有没有办法在UWP中自定义默认的TextBox控件？我需要把“X”按钮变小

<Style TargetType="TextBox" x:Key="CustomTextBoxStyle">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TextBox">
                <Grid>
                    <!-- 其他TextBox的视觉元素 -->

                    <!-- 修改"X"按钮的大小 -->
                    <Button x:Name="ClearButton"
                            Width="16"
                            Height="16"
                            VerticalAlignment="Center"
                            HorizontalAlignment="Right"
                            Style="{StaticResource ClearButtonStyle}" />

                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

<TextBox Style="{StaticResource CustomTextBoxStyle}" />