如何设定子元素的Storyboard.TargetProperty

[懒伞]

<Style TargetType="Border" x:Key="orientation">
            <Setter Property="Width" Value="16"/>
            <Setter Property="Height" Value="16"/>
            <Setter Property="BorderThickness" Value="1"/>
            <Setter Property="BorderBrush" Value="Transparent"/>
            <Setter Property="Background" Value="Transparent"/>
            <Setter Property="CornerRadius" Value="2"/>
            <Setter Property="SnapsToDevicePixels" Value="True"/>
            <Style.Triggers>
                <EventTrigger RoutedEvent="MouseEnter">
                    <BeginStoryboard>
                        <Storyboard>
                            <ColorAnimation To="#A1B3C8" Duration="0:0:0.3" Storyboard.TargetProperty="(BorderBrush).(SolidColorBrush.Color)"/>
                            <ColorAnimation To="White" Duration="0:0:0.3" Storyboard.TargetProperty="(Background).(SolidColorBrush.Color)"/>

                            <!--<ColorAnimation To="#1E395B" Duration="0:0:0.3" Storyboard.TargetProperty="(Shape.Fill).Color"/>-->
                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
                <EventTrigger RoutedEvent="MouseLeave">
                    <BeginStoryboard>
                        <Storyboard>
                            <ColorAnimation To="Transparent" Duration="0:0:0.3" Storyboard.TargetProperty="(BorderBrush).(SolidColorBrush.Color)"/>
                            <ColorAnimation To="Transparent" Duration="0:0:0.3" Storyboard.TargetProperty="(Background).(SolidColorBrush.Color)"/>
                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
            </Style.Triggers>
        </Style>

<Border Margin="5 0 3 0" Style="{StaticResource orientation}">
    <Path Data="M 9,2 9,12 5,7 Z" Fill="#AAAAAA" />
</border>

想让鼠标移到border中，Path绘制的图形Fill也变颜色，我写的如下：

<ColorAnimation To="#1E395B" Duration="0:0:0.3" Storyboard.TargetProperty="(Shape.Fill).Color"/>

但是系统报错，请问如何写才能找到子元素的属性值？

[Eason0807]

你这种不是模板里的元素是不行的吧？除非你用behavior