gistfile1.xml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Style
        x:Key="ButtonFocusVisual">
        <Setter
            Property="Control.Template">
            <Setter.Value>
                <ControlTemplate>
                    <Rectangle Margin="2" SnapsToDevicePixels="true" Stroke="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" StrokeThickness="1" StrokeDashArray="1 2" />
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <Style x:Key="MetroButton" TargetType="{x:Type Button}">
			<Setter Property="FocusVisualStyle" Value="{StaticResource ButtonFocusVisual}"/>
			<Setter Property="Background" Value="#EEEEEEEE"/>
			<Setter Property="Foreground" Value="Black"/>
			<Setter Property="HorizontalContentAlignment" Value="Center"/>
			<Setter Property="VerticalContentAlignment" Value="Center"/>
			<Setter Property="Padding" Value="10 5"/>
            <Setter Property="FontSize" Value="14" />
            <Setter Property="BorderThickness" Value="2" />
			<Setter Property="Template">
				<Setter.Value>
					<ControlTemplate TargetType="{x:Type Button}">
                        <Grid>
                            <Border
                                x:Name="Border"
                                Background="{TemplateBinding Background}"
                                BorderBrush="{TemplateBinding BorderBrush}"
                                BorderThickness="{TemplateBinding BorderThickness}" />

                            <ContentPresenter
                                HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                Margin="{TemplateBinding Padding}"
                                VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                                RecognizesAccessKey="True" />
                        </Grid>
						<ControlTemplate.Triggers>
                            <Trigger Property="IsPressed" Value="True">
                                <Setter Property="OpacityMask" Value="#AA888888"/>
                                <Setter Property="Margin" Value="2 1" />
                            </Trigger>
                            <Trigger Property="IsMouseOver" Value="True">
                                <Setter Property="BorderThickness" Value="0"/>
                                <!--<Setter Property="Background" Value="DimGray"/>-->
                                <Setter Property="Foreground" Value="White"/>
                            </Trigger>
							<Trigger Property="IsEnabled" Value="false">
								<Setter Property="Foreground" Value="#ADADAD"/>
							</Trigger>
						</ControlTemplate.Triggers>
					</ControlTemplate>
				</Setter.Value>
			</Setter>
		</Style>
</ResourceDictionary>