WPF TextBlock ColorAnimation

I am totally new with WPF animations, and for the moment I face big problems with this.

I have a TextBlock for which, as long as a property to my view model has a specific value, I want to run a ColorAnimation to its background color. When the value to my property changes I want the background color for my TextBlock to return back to the original one (probably Transparent). Here is what I discovered so far, but it still not working as I described.

<TextBlock Text="{Binding DatabaseTasks.Count, StringFormat= 'Count: {0}'}" VerticalAlignment="Center" Background="Transparent">
                    <TextBlock.Style>
                        <Style TargetType="TextBlock">
      开发者_StackOverflow社区                      <Style.Triggers>
                                <DataTrigger Binding="{Binding IsIdle}" Value="False">
                                    <DataTrigger.EnterActions>
                                        <BeginStoryboard>
                                            <Storyboard Storyboard.TargetProperty="(TextBlock.Background).(SolidColorBrush.Color)">
                                                <ColorAnimation  RepeatBehavior="Forever"
                                                                 FillBehavior="Stop"
                                                                 From="Red"
                                                                 To="Transparent"
                                                                 By="Blue"
                                                                 Duration="0:0:0.5" />
                                            </Storyboard>
                                        </BeginStoryboard>
                                    </DataTrigger.EnterActions>
                                </DataTrigger>
                            </Style.Triggers>
                        </Style>
                    </TextBlock.Style>
                </TextBlock>

Can someone fix this?

Thank you in advance!

EDIT: The binding works just fine and I tested it using a simple DataTrigger that just changes the background color. My problem is that animation does not stop and return to the orginal color. I am sure I miss something.

Adding the RemoveStoryboard tag should do it.

<Style TargetType="TextBlock">                            
                    <Style.Triggers>                                 
                    <DataTrigger Binding="{Binding IsIdle}" Value="False">                                     
                        <DataTrigger.EnterActions>                                         
                            <BeginStoryboard x:Name="tt" >                                             
                                <Storyboard Storyboard.TargetProperty="(TextBlock.Background).(SolidColorBrush.Color)">                                                 
                                    <ColorAnimation  RepeatBehavior="Forever"                                                                  
                                                     FillBehavior="Stop"                                                                  
                                                     From="Red"                                                                  
                                                     To="Transparent"                                                                  
                                                     By="Blue"                                                                  
                                                     Duration="0:0:0.5" />                                             
                                </Storyboard>                                         
                            </BeginStoryboard>
                           </DataTrigger.EnterActions>                                
                         <DataTrigger.ExitActions>       
                            <RemoveStoryboard  BeginStoryboardName="tt"></RemoveStoryboard>
                        </DataTrigger.ExitActions> 
                    </DataTrigger>                          
                </Style.Triggers>                         
               </Style>