controlmymonitormanagement/ControlMyMonitorManagement/Style/Btn.xaml

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

    <Style x:Key="ImageButton" TargetType="{x:Type ButtonBase}" BasedOn="{x:Null}">
        <Setter Property="FocusVisualStyle" Value="{x:Null}" />
        <Style.Triggers>
            <Trigger Property="IsEnabled" Value="false">
                <Setter Property="Foreground" Value="{StaticResource DisabledForegroundBrush}"/>
            </Trigger>
            <Trigger Property="IsMouseOver" Value="True">
                <Setter Property="Cursor" Value="Hand" />
            </Trigger>
        </Style.Triggers>
    </Style>

    <Style x:Key="GeometryButton" TargetType="{x:Type ButtonBase}" BasedOn="{StaticResource ImageButton}">
        <Setter Property="Foreground" Value="White" />
        <Style.Triggers>
            <Trigger Property="IsMouseOver" Value="True">
                <Setter Property="Foreground" Value="{StaticResource H1}"/>
            </Trigger>
        </Style.Triggers>
    </Style>

    <!--Btn Cancel-->
    <Style x:Key="CancelButton" TargetType="{x:Type ButtonBase}" BasedOn="{StaticResource GeometryButton}">
        <Setter Property="Margin" Value="3,0,0,0"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Button">
                    <Border>
                        <Grid Background="{StaticResource AlphaBrush}">
                            <Path Style="{StaticResource PathCancel}"/>
                            <Path Style="{StaticResource PathFrame}"/>
                        </Grid>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <!--Btn Minimized-->
    <Style x:Key="MinimizedButton" TargetType="{x:Type ButtonBase}" BasedOn="{StaticResource GeometryButton}">
        <Setter Property="Margin" Value="3,0,0,0"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Button">
                    <Border>
                        <Grid Background="{StaticResource AlphaBrush}">
                            <Path Style="{StaticResource PathMinimized}"/>
                            <Path Style="{StaticResource PathFrame}"/>
                        </Grid>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

</ResourceDictionary>