How to style the Action Bar Overflow on devices with a hardware menu button?

How to style the Action Bar Overflow on devices with a hardware menu button?

this is how I style the Action Bar Overflow on stock android:
<style name="DropDownNav.MyTheme"
parent="@android:style/Widget.Holo.Light.Spinner">
<item name="android:popupBackground">@drawable/menu_dropdown_panel</item>
<item
name="android:dropDownSelector">@drawable/selectable_background</item>
</style>
But the specified custom selector is not applied to the popup options menu
on Samsung devices with a hardware button, instead it is default blue.
I've seen this answer and tried to apply
<style name="ListPopupWindow.IvuTheme"
parent="android:Widget.ListPopupWindow">
<item
name="android:dropDownSelector">@drawable/list_selector_holo_light</item>
<item
name="android:listSelector">@drawable/list_selector_holo_light</item>
</style>
but to no effect.
What style do I need to inherit (and what is the corresponding attribute
in my theme) in order to change the selector in the latter hardware button
options menu?
Thanks for any advice