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我有一个Tabcontrol，它的TabItem为Datatemplate，TabItem的风格为ItemContainerStyle。TabItem的ItemContainerStyle被赋值WPF中的蓝色/白色控制颜色Tabcontrol
的TabControl的：
<TabControl Name="MainTabCtrl" Margin="0" Padding="0" BorderThickness="0" Background="Transparent"
IsSynchronizedWithCurrentItem="True"
ItemsSource="{Binding Path=TabViewModels}"
ItemTemplate="{StaticResource ClosableTabItemTemplate}"
HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch"
ItemContainerStyle="{StaticResource ContainerStyle}">
的DataTemplate中名为ClosableTabItemTemplate的的TabItems：
<DataTemplate x:Key="ClosableTabItemTemplate" >
<Border BorderThickness="3" BorderBrush="Transparent" CornerRadius="4" >
<!--Border to make the tab item gap from the content-->
<Border x:Name="InsideBorder" BorderThickness="3" BorderBrush="#D6EAFF" CornerRadius="4">
<!--Border for the rounded corners-->
<!--TabItem Content Grid-->
<Grid x:Name="tabItemGrid" ShowGridLines="True" Margin="0" Background="#D6EAFF">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="25"/>
<!--Icon Column-->
<ColumnDefinition Width="1*"/>
<!--Title Column-->
<ColumnDefinition Width="20"/>
<!--Close Button Column-->
</Grid.ColumnDefinitions>
<!--Icon of tab Item-->
<Image Grid.Column="0" Grid.Row="1" Height="18" HorizontalAlignment="Left" Source="Images/tab1.jpg"/>
<!--Title of tab Item-->
<Label Name="TabText" Grid.Column="1" Grid.Row="1" Content="TabItem" Height="23" HorizontalAlignment="Left"
Margin="4,1,0,0" VerticalAlignment="Top" FontFamily="Courier" FontSize="12" />
<!--Close button of tab Item-->
<Button Style="{DynamicResource TabButton}"
Name="button_close" Content="x"
Command="{Binding Path=CloseCommand}"
Grid.Column="2" Grid.Row="1"
Height="20" Width="20"
Margin="0,0,0,2" VerticalAlignment="Center" HorizontalAlignment="Right"
FontFamily="Courier" FontStretch="Normal" FontWeight="Bold" FontSize="14"
Visibility="Visible" ToolTip="Close"
BorderBrush="Transparent" BorderThickness="0" Background="Transparent" Padding="0,0,0,0"
>
</Button>
</Grid>
</Border>
</Border>
<DataTemplate.Triggers>
<DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type TabItem}},Path=IsSelected}" Value="True">
<Setter TargetName="tabItemGrid" Property="Background" Value="#D6EAFF" />
</DataTrigger>
<DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type TabItem}},Path=IsSelected}" Value="False">
<!--<Trigger Property="IsSelected" Value="False">-->
<Setter TargetName="InsideBorder" Property="BorderBrush">
<Setter.Value>
<LinearGradientBrush EndPoint="0,1" StartPoint="0,0">
<GradientStop Color="#FFCCCCD0" />
<GradientStop Color="#FF526593" Offset="1" />
</LinearGradientBrush>
</Setter.Value>
</Setter>
<Setter TargetName="tabItemGrid" Property="Background">
<Setter.Value>
<LinearGradientBrush EndPoint="0,1" StartPoint="0,0">
<GradientStop Color="#FFCCCCD0" />
<GradientStop Color="#FF526593" Offset="1" />
</LinearGradientBrush>
</Setter.Value>
</Setter>
</DataTrigger>
<!--</Trigger>-->
</DataTemplate.Triggers>
</DataTemplate>
中的TabItem的ItemContainerStyle：
<Style TargetType="{x:Type TabItem}" x:Key="ContainerStyle">
<Setter Property="Background" Value="Red" />
<Setter Property="BorderBrush" Value="Red" />
<Setter Property="Padding" Value="0" />
<Setter Property="Margin" Value="0" />
<Style.Triggers>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Background" Value="Red"/>
<Setter Property="BorderBrush" Value="Red" />
</Trigger>
<Trigger Property="IsEnabled" Value="true">
<Setter Property="Background" Value="Red"/>
<Setter Property="BorderBrush" Value="Red" />
</Trigger>
<Trigger Property="IsMouseOver" Value="false">
<Setter Property="Background" Value="Red"/>
<Setter Property="BorderBrush" Value="Red" />
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="Background" Value="Red"/>
<Setter Property="BorderBrush" Value="Red" />
</Trigger>
<Trigger Property="IsFocused" Value="false">
<Setter Property="Background" Value="Red"/>
<Setter Property="BorderBrush" Value="Red" />
</Trigger>
<Trigger Property="IsFocused" Value="true">
<Setter Property="Background" Value="Red"/>
<Setter Property="BorderBrush" Value="Red" />
</Trigger>
<Trigger Property="IsKeyboardFocused" Value="false">
<Setter Property="Background" Value="Red"/>
<Setter Property="BorderBrush" Value="Red" />
</Trigger>
<Trigger Property="IsKeyboardFocused" Value="true">
<Setter Property="Background" Value="Red"/>
<Setter Property="BorderBrush" Value="Red" />
</Trigger>
</Style.Triggers>
</Style>
什么情况是，所选择的选项卡无论我做什么，总是使用白色的默认控制背景：
还当我点鼠标移到未选中的标签变为蓝色背景，而不是红色：
我用透明色，而不是红色，但它更容易显示红色的问题。
为什么默认颜色覆盖itemStyleContainer和样式触发器？
都能跟得上。 ..没有改变任何东西......但无论如何感谢。 – Rodniko
在另一个答案中发布了答案，谢谢。 – Rodniko