Q: VisualState, StoryBoard, Instant change of color (without animation) my task seemed to me as something easy (WinRT).  
All I want is to change color of Rectangle depending on state.  
I know how to do it in a "cool" animated way.  
The thing is that I just want my color to be changed immediately without any animation.  
This is a standard, cool way:  
<VisualState x:Name="UnFocused">
    <Storyboard Duration="1">
        <ColorAnimation To="{ThemeResource LightGrayColor}"   
            Storyboard.TargetName="borderBrush"  
            Storyboard.TargetProperty="Color"/>
    </Storyboard>
</VisualState>  

I thought that if I change Duration to zero then the change will be instant.  
It does not work this way, color did not change at all.  
So I tried "0:0:0.1" but it did not change color either.  
So...
What is the current approach to change color in instant using VisualState functionality?  
Thank you :-)

A: I don't know whether WinRT has some restrictions. At least I would also have expected that zero works fine. But you have some more options and still being cool:
<ObjectAnimationUsingKeyFrames Duration="00:00:00"
                                Storyboard.TargetName="borderBrush"
                                Storyboard.TargetProperty="Color">
    <DiscreteObjectKeyFrame KeyTime="00:00:00">
        <DiscreteObjectKeyFrame.Value>
            <SolidColorBrush Color="{ThemeResource LightGrayColor}"/>
        </DiscreteObjectKeyFrame.Value>
    </DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>

or
<ColorAnimationUsingKeyFrames Storyboard.TargetName="borderBrush"
                              Storyboard.TargetProperty="Color">
    <EasingColorKeyFrame KeyTime="0" 
                         Value="{ThemeResource LightGrayColor}" />
</ColorAnimationUsingKeyFrames>


A: Turning @Jacek-Wojcik's comment into an answer: 
Don't set a duration on the storyboard, set it on the ColorAnimation instead:
<VisualState x:Name="UnFocused">
  <Storyboard >
    <ColorAnimation Duration="0" To="{ThemeResource LightGrayColor}"   
        Storyboard.TargetName="borderBrush"  
        Storyboard.TargetProperty="Color"/>
 </Storyboard>
</VisualState>  

