Cannot resolve all property references in the property path 'TextElement.Foreground' - wpf

Question

I set up a control template for a button in my wpf application but I'm having trouble animating the ContentPresenter (which is text) Foreground colour in my storyboard.
Below is the xaml to set up the button
<ControlTemplate x:Key="SaveButton" TargetType="{x:Type ButtonBase}">
<Border x:Name="buttonBorder" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="auto" />
<ColumnDefinition Width="auto" />
</Grid.ColumnDefinitions>
<Control Grid.Column="0" Template="{DynamicResource save_icon}"
Margin="10,0,0,0"
/>
<TextBlock x:Name="buttonContent"
Text="Save"
Focusable="False" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
Margin="{TemplateBinding Padding}"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
Grid.Column="1"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="Button.IsDefaulted" Value="True">
<Setter Property="BorderBrush" TargetName="buttonBorder" Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}"/>
</Trigger>
<EventTrigger RoutedEvent="MouseEnter">
<BeginStoryboard>
<Storyboard>
<ColorAnimation
To="#000" Duration="0:0:0.2"
Storyboard.TargetName="buttonBorder"
Storyboard.TargetProperty="Background.Color"/>
<ColorAnimation
To="#fff" Duration="0:0:0.2"
Storyboard.TargetName="buttonContent"
Storyboard.TargetProperty="TextElement.Foreground"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
<EventTrigger RoutedEvent="MouseLeave">
<BeginStoryboard>
<Storyboard>
<ColorAnimation
To="#fff" Duration="0:0:0.2"
Storyboard.TargetName="buttonBorder"
Storyboard.TargetProperty="Background.Color"/>
<ColorAnimation
To="#000" Duration="0:0:0.2"
Storyboard.TargetName="buttonContent"
Storyboard.TargetProperty="TextElement.Foreground"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
However on mouse hover I get the following error - Cannot resolve all property references in the property path 'TextElement.Foreground'
Why is this and how do I fix this?

Answer 1

<ColorAnimation Storyboard.TargetProperty="(TextBlock.Background).(SolidColorBrush.Color)" To="Red"/>
<ColorAnimation Storyboard.TargetProperty="(TextBlock.Foreground).(SolidColorBrush.Color)" To="Red"/>
Full example for doubters
<Button Content="Context">
<Button.Template>
<ControlTemplate TargetType="Button">
<Border Name="bord" Background="CadetBlue">
<TextBlock Name="tekst" Text="text" Foreground="Black"/>
</Border>
<ControlTemplate.Triggers>
<EventTrigger RoutedEvent="MouseEnter">
<BeginStoryboard>
<Storyboard>
<ColorAnimation Storyboard.TargetName="bord" Storyboard.TargetProperty="(Border.Background).(SolidColorBrush.Color)" To="Red"/>
<ColorAnimation Storyboard.TargetName="tekst" Storyboard.TargetProperty="(TextBlock.Foreground).(SolidColorBrush.Color)" To="White"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Button.Template>
</Button>