Overriding MenuItem ControlTemplate breaks click events - wpf

Question

I'd like to override the MenuItem ControlTemplate so that I can customize the mouseover background color of my MenuItems.
I'm using the following xaml:
<Style TargetType="MenuItem">
<Setter Property="Background" Value="#26222b"/>
<Setter Property="Height" Value="25"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="MenuItem">
<Border Padding="10 0 10 0"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Background="{TemplateBinding Background}">
<ContentPresenter x:Name="ContentPresenter"
Content="{TemplateBinding Header}"
ContentSource="Header"
Margin="{TemplateBinding Padding}"
RecognizesAccessKey="True"
VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsHighlighted" Value="True">
<Setter Property="Background" Value="#2f2a36"/>
</Trigger>
</Style.Triggers>
</Style>
This does what I expect it to in terms of style, but the buttons no longer respond to click events.
I've also tried using a ControlTemplate.Trigger instead of a Style.Trigger to make the change I want. I don't know which solution is considered proper (please let me know) but neither seemed to address the problem at hand.
It's my understanding that I should be able to override the element's style without having to rewrite its click response functionality, so I assume I'm doing something wrong here to break it.
Just in case it's helpful, below is the xaml in which I've defined the menu itself:
<Menu Grid.Row="0"
Grid.ColumnSpan="2"
IsMainMenu="True">
<Menu.Items>
<MenuItem Header="_File" DataContext="{Binding File}">
<MenuItem Header="_New" Command="{Binding NewCommand}"/>
<MenuItem Header="_Open" Command="{Binding OpenCommand}" />
<MenuItem Header="_Save" Command="{Binding SaveCommand}"/>
<MenuItem Header="_Save as..." Command="{Binding SaveAsCommand}"/>
</MenuItem>
<MenuItem Header="_Format" DataContext="{Binding Editor}">
<MenuItem Header="_Format" Command="{Binding FormatCommand}"/>
<MenuItem Header="_Word wrap" Command="{Binding WrapCommand}"/>
</MenuItem>
<MenuItem Header="_Help" DataContext="{Binding Help}">
<MenuItem Header="_About" Command="{Binding HelpCommand}"/>
</MenuItem>
</Menu.Items>
</Menu>
Any direction would be greatly appreciated. Thanks in advance!