How can I override the default pointerover style for a button?

[Ha-rlan]

I can't find the pointerover pseudo-class for the button selector, and I have a situation where I need to change the font color when a ListBoxItem is selected. I wrote the style like this

        <Style Selector="ListBox:not(.Base) ListBoxItem:selected /template/ ContentPresenter">
            <Setter Property="Background" Value="{StaticResource MainColor}"/>
            <Setter Property="Foreground" Value="{StaticResource FontColor}"/>
            <Style Selector="^ Button">
                <Setter Property="Foreground" Value="{StaticResource FontColor}"/>
            </Style>
        </Style>

but it's useless