在工具包中，我无法弄清楚如何更改所选部分下的文本颜色。它是灰色的，看起来像是被禁用了。我要更改什么才能以默认颜色显示它？
谢谢！
替代文字 http://img199.imageshack.us/img199/7517/accordion.png
<!--
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<UserControl x:Class="System.Windows.Controls.Samples.AccordionShowcase" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:layoutToolkit="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Layout.Toolkit" xmlns:vsm="clr-namespace:System.Windows;assembly=System.Windows" xmlns:layoutToolkitPrimitives="clr-namespace:System.Windows.Controls.Primitives;assembly=System.Windows.Controls.Layout.Toolkit">
<StackPanel Background="White">
<ContentControl Content="Accordion restyled (based on ajax toolkit style)" Style="{StaticResource Header}"/>
<layoutToolkit:Accordion>
<layoutToolkit:Accordion.Resources>
<!-- ajax toolkit styled AccordionItemHeader-->
<ControlTemplate TargetType="layoutToolkitPrimitives:AccordionButton" x:Key="AjaxHeader">
<Grid Background="Transparent">
<vsm:VisualStateManager.VisualStateGroups>
<!-- ExpansionStates -->
<vsm:VisualStateGroup x:Name="ExpansionStates">
<vsm:VisualStateGroup.Transitions>
<vsm:VisualTransition GeneratedDuration="0"/>
</vsm:VisualStateGroup.Transitions>
<vsm:VisualState x:Name="Collapsed">
<Storyboard>
</Storyboard>
</vsm:VisualState>
<vsm:VisualState x:Name="Expanded">
<Storyboard>
<Storyboard>
<ColorAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.0030000" Storyboard.TargetName="background" Storyboard.TargetProperty="(Border.Background).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00" Value="#FF5078B3"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
</Storyboard>
</vsm:VisualState>
</vsm:VisualStateGroup>
<!-- CheckStates -->
<vsm:VisualStateGroup x:Name="CheckStates">
<vsm:VisualStateGroup.Transitions>
<vsm:VisualTransition GeneratedDuration="00:00:00"/>
</vsm:VisualStateGroup.Transitions>
<vsm:VisualState x:Name="Checked">
</vsm:VisualState>
<vsm:VisualState x:Name="Unchecked"/>
</vsm:VisualStateGroup>
<!-- CommonStates -->
<vsm:VisualStateGroup x:Name="CommonStates">
<vsm:VisualStateGroup.Transitions>
<vsm:VisualTransition GeneratedDuration="0"/>
<vsm:VisualTransition GeneratedDuration="00:00:00.1" From="MouseOver" To="Normal"/>
<vsm:VisualTransition GeneratedDuration="00:00:00.1" To="MouseOver"/>
<vsm:VisualTransition GeneratedDuration="00:00:00.1" To="Pressed"/>
</vsm:VisualStateGroup.Transitions>
<vsm:VisualState x:Name="Normal"/>
<vsm:VisualState x:Name="MouseOver">
<Storyboard>
<ColorAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.0030000" Storyboard.TargetName="MouseOverBackground" Storyboard.TargetProperty="(Grid.Background).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00" Value="#FF2E4D7B"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
</vsm:VisualState>
<vsm:VisualState x:Name="Pressed">
<Storyboard>
</Storyboard>
</vsm:VisualState>
<vsm:VisualState x:Name="Disabled">
<Storyboard>
</Storyboard>
</vsm:VisualState>
</vsm:VisualStateGroup>
<!-- FocusStates -->
<vsm:VisualStateGroup x:Name="FocusStates">
<vsm:VisualState x:Name="Focused">
<Storyboard>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetName="FocusVisualElement" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" Value="Visible"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</vsm:VisualState>
<vsm:VisualState x:Name="Unfocused"/>
</vsm:VisualStateGroup>
</vsm:VisualStateManager.VisualStateGroups>
<Border x:Name="MouseOverBackground" Background="#FF2E4D7B" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}">
<Border x:Name="background" Background="Transparent">
<Grid Background="Transparent" Margin="{TemplateBinding Padding}">
<ContentControl x:Name="header" Grid.Column="1" Grid.Row="0" Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}" Foreground="{TemplateBinding Foreground}" FontFamily="{TemplateBinding FontFamily}" FontSize="{TemplateBinding FontSize}" FontStretch="{TemplateBinding FontStretch}" FontStyle="{TemplateBinding FontStyle}" FontWeight="{TemplateBinding FontWeight}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}">
</ContentControl>
</Grid>
</Border>
</Border>
<Rectangle x:Name="FocusVisualElement" IsHitTestVisible="false" Stroke="Green" StrokeDashArray="1 2" StrokeThickness="1" Visibility="Collapsed"/>
</Grid>
</ControlTemplate>
<!-- ajax toolkit styled AccordionItem-->
<ControlTemplate TargetType="layoutToolkit:AccordionItem" x:Key="ajaxTemplate">
<Grid Background="Transparent">
<vsm:VisualStateManager.VisualStateGroups>
<!-- CommonState -->
<vsm:VisualStateGroup x:Name="CommonStates">
<vsm:VisualStateGroup.Transitions>
<vsm:VisualTransition GeneratedDuration="0"/>
</vsm:VisualStateGroup.Transitions>
<vsm:VisualState x:Name="Normal"/>
<vsm:VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="0" Storyboard.TargetName="DisabledVisualElement" Storyboard.TargetProperty="(UIElement.Opacity)" To="1"/>
</Storyboard>
</vsm:VisualState>
</vsm:VisualStateGroup>
<!-- FocusStates -->
<vsm:VisualStateGroup x:Name="FocusStates">
<vsm:VisualState x:Name="Focused">
<Storyboard>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetName="FocusVisualElement" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" Value="Visible"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</vsm:VisualState>
<!-- Unfocused -->
<vsm:VisualState x:Name="Unfocused"/>
</vsm:VisualStateGroup>
<!-- ExpansionStates -->
<vsm:VisualStateGroup x:Name="ExpansionStates">
<vsm:VisualStateGroup.Transitions>
<vsm:VisualTransition GeneratedDuration="0"/>
</vsm:VisualStateGroup.Transitions>
<vsm:VisualState x:Name="Collapsed">
<Storyboard>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="ExpandSite" Storyboard.TargetProperty="(ExpandableContentControl.Percentage)">
<SplineDoubleKeyFrame KeyTime="00:00:00.3" KeySpline="0.2,0,0,1" Value="0"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</vsm:VisualState>
<vsm:VisualState x:Name="Expanded">
<Storyboard>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="ExpandSite" Storyboard.TargetProperty="(ExpandableContentControl.Percentage)">
<SplineDoubleKeyFrame KeyTime="00:00:00.3" KeySpline="0.2,0,0,1" Value="1"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</vsm:VisualState>
</vsm:VisualStateGroup>
<!-- ExpansionStates -->
<vsm:VisualStateGroup x:Name="LockedStates">
<vsm:VisualStateGroup.Transitions>
<vsm:VisualTransition GeneratedDuration="0"/>
</vsm:VisualStateGroup.Transitions>
<vsm:VisualState x:Name="Locked">
<Storyboard>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetName="ExpanderButton" Storyboard.TargetProperty="IsEnabled">
<DiscreteObjectKeyFrame KeyTime="0" Value="False"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</vsm:VisualState>
<vsm:VisualState x:Name="Unlocked">
<Storyboard>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetName="ExpanderButton" Storyboard.TargetProperty="IsEnabled">
<DiscreteObjectKeyFrame KeyTime="0" Value="True"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</vsm:VisualState>
</vsm:VisualStateGroup>
</vsm:VisualStateManager.VisualStateGroups>
<Border x:Name="Background" Padding="{TemplateBinding Padding}" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="4">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<layoutToolkitPrimitives:AccordionButton Template="{StaticResource AjaxHeader}" x:Name="ExpanderButton" Content="{TemplateBinding Header}" ContentTemplate="{TemplateBinding HeaderTemplate}" IsChecked="{TemplateBinding IsSelected}" Grid.Column="0" Grid.ColumnSpan="2" Grid.Row="0" Padding="4" Margin="0" FontFamily="{TemplateBinding FontFamily}" FontSize="14" FontStretch="{TemplateBinding FontStretch}" FontStyle="{TemplateBinding FontStyle}" FontWeight="Bold" Foreground="#FFFFFFFF" HorizontalContentAlignment="Left" VerticalContentAlignment="Center"/>
<layoutToolkitPrimitives:ExpandableContentControl x:Name="ExpandSite" Grid.Column="0" Grid.ColumnSpan="2" Grid.Row="1" Percentage="0" Background="#FFD3DEEF" RevealMode="{TemplateBinding ExpandDirection}" Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}" Padding="2" Margin="1" FontFamily="{TemplateBinding FontFamily}" FontSize="12" FontStretch="{TemplateBinding FontStretch}" FontStyle="{TemplateBinding FontStyle}" FontWeight="{TemplateBinding FontWeight}" Foreground="DarkGray" HorizontalAlignment="Stretch" HorizontalContentAlignment="Left" VerticalAlignment="Stretch" VerticalContentAlignment="Top"/>
</Grid>
</Border>
<Border x:Name="DisabledVisualElement" IsHitTestVisible="false" Opacity="0" Background="#A5FFFFFF" CornerRadius="3"/>
<Border x:Name="FocusVisualElement" IsHitTestVisible="false" Visibility="Collapsed" BorderThickness="1" CornerRadius="3">
<Border.BorderBrush>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FFA3AEB9"/>
<GradientStop Color="#FF8399A9" Offset="0.375"/>
<GradientStop Color="#FF718597" Offset="0.375"/>
<GradientStop Color="#FF617584" Offset="1"/>
</LinearGradientBrush>
</Border.BorderBrush>
</Border>
</Grid>
</ControlTemplate>
</layoutToolkit:Accordion.Resources>
<layoutToolkit:AccordionItem Header="1. Accordion" Template="{StaticResource ajaxTemplate}">
<layoutToolkit:AccordionItem.Content>
<TextBlock>
The Accordion is a control that allows you to provide multiple panes and display them.<LineBreak/>
There are several selection modes, so you can decide if only one pane can be open, <LineBreak/>
or multiple.<LineBreak/>
It is also possible to adjust the order in which the panes open and close:<LineBreak/>
Simultaneous or close first. <LineBreak/>
<LineBreak/>
The Accordion is implemented as an itemscontrol that contains AccordionItem controls. <LineBreak/>
Each AccordionItem control has a template for its Header and its Content. <LineBreak/>
</TextBlock>
</layoutToolkit:AccordionItem.Content>
</layoutToolkit:AccordionItem>
<layoutToolkit:AccordionItem Header="2. AutoSize" Template="{StaticResource ajaxTemplate}">
<TextBlock>
It also supports filling to a specific height or width. <LineBreak/>
To do so, either set a Height (or Width) or use a VerticalAlignment <LineBreak/>
(or HorizontalAlignment) of 'Stretch'. <LineBreak/>
The Accordion will now always fill to that space. If more than one pane <LineBreak/>
may be opened, space is divided equally among them.
<LineBreak/>
Whether you fill to height or width is determined by the ExpandDirection property.<LineBreak/>
An accordion will is able to expand to Down, Up, Left and Right directions.
</TextBlock>
</layoutToolkit:AccordionItem>
<layoutToolkit:AccordionItem Header="3. Template parts" Template="{StaticResource ajaxTemplate}">
<TextBlock>
The accordion uses AccordionItems that can be fully templated.<LineBreak/>
In order to 'reveal' contents slowly, an ExpandableContentControl is used. <LineBreak/>
That control has a percentage property that can be animated. A value of 1 <LineBreak/>
means that the content is completely shown.<LineBreak/>
<LineBreak/>
AccordionItem animates this property using a keyspline to get a nice <LineBreak/>
easing-in effect. You can retemplate AccordionItem and create your own <LineBreak/>
transitions!<LineBreak/>
</TextBlock>
</layoutToolkit:AccordionItem>
</layoutToolkit:Accordion>
<ContentControl Content="Accordion restyled horizontally" Style="{StaticResource Header}"/>
<layoutToolkit:Accordion ExpandDirection="Left" Background="#FFE7E7E7">
<layoutToolkit:Accordion.Resources>
<!-- horizontal header -->
<ControlTemplate TargetType="layoutToolkitPrimitives:AccordionButton" x:Key="HorizontalHeader">
<Grid Background="Transparent">
<vsm:VisualStateManager.VisualStateGroups>
<!-- ExpandDirectionStates -->
<vsm:VisualStateGroup x:Name="ExpandDirectionStates">
<vsm:VisualStateGroup.Transitions>
<vsm:VisualTransition GeneratedDuration="0"/>
</vsm:VisualStateGroup.Transitions>
<vsm:VisualState x:Name="ExpandDown">
<Storyboard>
</Storyboard>
</vsm:VisualState>
<vsm:VisualState x:Name="ExpandUp">
<Storyboard>
</Storyboard>
</vsm:VisualState>
<vsm:VisualState x:Name="ExpandLeft">
<Storyboard>
</Storyboard>
</vsm:VisualState>
<vsm:VisualState x:Name="ExpandRight">
<Storyboard>
</Storyboard>
</vsm:VisualState>
</vsm:VisualStateGroup>
<!-- ExpansionStates -->
<vsm:VisualStateGroup x:Name="ExpansionStates">
<vsm:VisualStateGroup.Transitions>
<vsm:VisualTransition GeneratedDuration="0"/>
</vsm:VisualStateGroup.Transitions>
<vsm:VisualState x:Name="Collapsed">
<Storyboard>
</Storyboard>
</vsm:VisualState>
<vsm:VisualState x:Name="Expanded">
<Storyboard>
</Storyboard>
</vsm:VisualState>
</vsm:VisualStateGroup>
<!-- CheckStates -->
<vsm:VisualStateGroup x:Name="CheckStates">
<vsm:VisualStateGroup.Transitions>
<vsm:VisualTransition GeneratedDuration="00:00:00"/>
</vsm:VisualStateGroup.Transitions>
<vsm:VisualState x:Name="Checked"/>
<vsm:VisualState x:Name="Unchecked"/>
</vsm:VisualStateGroup>
<!-- CommonStates -->
<vsm:VisualStateGroup x:Name="CommonStates">
<vsm:VisualStateGroup.Transitions>
<vsm:VisualTransition GeneratedDuration="0"/>
<vsm:VisualTransition GeneratedDuration="00:00:00.1" From="MouseOver" To="Normal"/>
<vsm:VisualTransition GeneratedDuration="00:00:00.1" To="MouseOver"/>
<vsm:VisualTransition GeneratedDuration="00:00:00.1" To="Pressed"/>
</vsm:VisualStateGroup.Transitions>
<vsm:VisualState x:Name="Normal"/>
<vsm:VisualState x:Name="MouseOver">
<Storyboard>
</Storyboard>
</vsm:VisualState>
<vsm:VisualState x:Name="Pressed">
<Storyboard>
</Storyboard>
</vsm:VisualState>
<vsm:VisualState x:Name="Disabled">
<Storyboard>
</Storyboard>
</vsm:VisualState>
</vsm:VisualStateGroup>
<!-- FocusStates -->
<vsm:VisualStateGroup x:Name="FocusStates">
<vsm:VisualState x:Name="Focused">
<Storyboard>
</Storyboard>
</vsm:VisualState>
<vsm:VisualState x:Name="Unfocused"/>
</vsm:VisualStateGroup>
</vsm:VisualStateManager.VisualStateGroups>
<Border x:Name="MouseOverBackground" Background="Transparent">
<Border x:Name="background" Background="Transparent">
<Grid Width="20" Height="200" Margin="{TemplateBinding Padding}">
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<Path.Fill>
<LinearGradientBrush EndPoint="-0.162,1.001" StartPoint="2.078,0.261">
<GradientStop Color="#FFC4C4C4"/>
<GradientStop Color="#FFF2F2F2" Offset="1"/>
</LinearGradientBrush>
</Path.Fill>
</Path>
<layoutToolkit:LayoutTransformer x:Name="header" Margin="0,0,5,0" RenderTransformOrigin="0.5,0.5" Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}" Foreground="{TemplateBinding Foreground}" FontFamily="{TemplateBinding FontFamily}" FontSize="{TemplateBinding FontSize}" FontStretch="{TemplateBinding FontStretch}" FontStyle="{TemplateBinding FontStyle}" FontWeight="{TemplateBinding FontWeight}" HorizontalAlignment="Center" VerticalAlignment="Center">
<layoutToolkit:LayoutTransformer.LayoutTransform>
<RotateTransform Angle="90"/>
</layoutToolkit:LayoutTransformer.LayoutTransform>
</layoutToolkit:LayoutTransformer>
</Grid>
</Border>
</Border>
<Rectangle x:Name="FocusVisualElement" IsHitTestVisible="false" Stroke="Green" StrokeDashArray="1 2" StrokeThickness="1" Visibility="Collapsed"/>
</Grid>
</ControlTemplate>