WPF按钮点击变色

 <Style x:Key="SwitchImageButtonStyle" TargetType="{x:Type Button}" BasedOn="{x:Null}">
                <Setter Property="Cursor" Value="Hand"/>
                <Setter Property="Padding" Value="0"/>
                <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
                <Setter Property="BorderBrush" Value="{x:Null}"/>
                <Setter Property="BorderThickness" Value="0"/>
                <Setter Property="Foreground" Value="Transparent"/>
                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="{x:Type Button}">
                            <Border x:Name="Border" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
 Padding="{TemplateBinding Padding}"/>

                            <ControlTemplate.Triggers>
                                <Trigger Property="IsFocused" Value="true">
                                    <!--IsPressed-->
                                    <Setter TargetName="Border" Property="Background" Value="{Binding Foreground, RelativeSource={RelativeSource TemplatedParent}}" />
                                </Trigger>
                            </ControlTemplate.Triggers>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
            </Style>

引用列子：

  <Button Canvas.Left="0" Canvas.Top="0" Height="45" x:Name="button1" Width="180"  Style="{StaticResource SwitchImageButtonStyle}" Command="{Binding RecentlyAddCmd}">
            <Button.Foreground>
                <ImageBrush ImageSource="/MediaCenter;component/Images/Common_Shared/BottomBar/btns_recently_added_activated.png"></ImageBrush>
            </Button.Foreground>
            <Button.Background>
                <ImageBrush ImageSource="/MediaCenter;component/Images/Common_Shared/BottomBar/btns_recently_added.png"/>
            </Button.Background>
        </Button>