Android : I can customize Overflow Menu but not default menu in Android

When I am using Action Bar,

I can customize the overflow menu such as modifying background color and text size by applying a custom style to theme.

<style name="CustomActionBarTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <item name="android:actionBarWidgetTheme">@style/Some.Style</item>
</style>

However, when I press hardware menu button,

it create a menu from bottom of screen which contains same items as overflow menu.

Unfortunately, the style of this bottom menu is not same as overflow menu.

It just uses the default style.

How can I customize the bottom menu style?