I'm using ActionBarSherlock
in my Project, is it possible to override overflow menu items backgrounds?
you can use the theme in your directory to try and override the ActionBarSherlock For example to use the DarkActionBar with a light dropdown list:
<style name="YourAppTheme" parent="Theme.Sherlock.Light.DarkActionBar">
<item name="dropDownListViewStyle">@style/Widget.Sherlock.Light.ListView.DropDown</item>
<item name="android:dropDownListViewStyle">@style/Widget.Sherlock.Light.ListView.DropDown</item>
</style>