WPF ListView - how do i set selected item background colour?

I currently have this, but it only work for the foreground colour.

Any help would be apriciated :D

<Style.Triggers>
    <Trigger Property="IsSelected" Value="true">
        <Setter Property="Foreground" Value="Red" />
        <Setter Property="Background" Value="Green"/> 
    </Trigger>
</Style.Triggers>