虽然这对我来说很好(确保你确实有键盘焦点来查看颜色的变化)
<Style TargetType="{x:Type TabItem}" >
<Style.Triggers>
<Trigger Property="IsKeyboardFocused" Value="True">
<Setter Property="BorderBrush" Value="Yellow"/>
</Trigger>
<Trigger Property="IsKeyboardFocused" Value="False">
<Setter Property="BorderBrush" Value="Blue"/>
</Trigger>
</Style.Triggers>
</Style>
如果选项卡内的任何项目具有键盘焦点,您也可以尝试更改颜色
<Style TargetType="{x:Type TabItem}" >
<Style.Triggers>
<Trigger Property="IsKeyboardFocusWithin" Value="True">
<Setter Property="BorderBrush" Value="Yellow"/>
</Trigger>
<Trigger Property="IsKeyboardFocusWithin" Value="False">
<Setter Property="BorderBrush" Value="Blue"/>
</Trigger>
</Style.Triggers>
</Style>