Hover effect in style doesn't work (ToolBarPanel) - WPF c#

Question

I have a toolbarpanel which I've made a custom style.

<Window.Resources>
    <Style x:Key="toolbar_opciones" TargetType="{x:Type ToolBarPanel}">
        <Setter Property="Background" Value="DeepSkyBlue"/> <!-- does not work -->
        <Setter Property="Cursor" Value="Hand"/>
        <Style.Triggers>
            <Trigger Property="IsMouseOver"  Value="True">
                <Setter Property="Background" Value="CadetBlue"/>
            </Trigger> <!-- does not work -->
        </Style.Triggers>
    </Style>
</Window.Resources>
<ToolBarPanel Style="{StaticResource toolbar_opciones}"/>

The cursor works but the background property no, why?

Answer 1

I tested your code, and here is the fix

<ToolBarPanel Style="{StaticResource toolbar_opciones}"/>

look at it closely, you were missing the double quotation which close the Style attribute. When I added it to the XAML , the Background has been applied.

Cheers.