style for the view poping up in the webview when a user selects a combo box

I need to find what style/theme is used by the webview for the view that pops when the user clicks a combo box in the html page.

On certain phones, the text gets chopped and I need to reduce the text size or allow each line to span multiple lines.

I have tried 5 styles so far, without success:

<style name="teststyle1" parent="@android:style/Widget.DropDownItem.Spinner">
    <item name="android:singleLine">false</item>
    <item name="android:textStyle">bold</item>
    <item name="android:textColor">#FF00FF</item>
    <item name="android:checkMark">@drawable/another_btn_radio</item>
</style>

<style name="teststyle2" parent="@android:style/Widget.TextView.SpinnerItem">
    <item name="android:singleLine">false</item>
    <item name="android:textStyle">bold</item>
    <item name="android:textColor">#FF00FF</item>
    <item name="android:checkMark">@drawable/another_btn_radio</item>
</style>

<style name="teststyle3" parent="@android:style/Widget.DropDownItem">
    <item name="android:singleLine">false</item>
    <item name="android:textStyle">bold</item>
    <item name="android:textColor">#FF00FF</item>
    <item name="android:checkMark">@drawable/another_btn_radio</item>
</style>

<style name="teststyle4" parent="@android:style/Widget.Spinner">
    <item name="android:singleLine">false</item>
    <item name="android:textStyle">bold</item>
    <item name="android:textColor">#FF00FF</item>
    <item name="android:checkMark">@drawable/another_btn_radio</item>
</style>

<style name="teststyle5" parent="@android:style/Widget.Spinner">
    <item name="android:singleLine">false</item>
    <item name="android:textStyle">bold</item>
    <item name="android:textColor">#FF00FF</item>
    <item name="android:checkMark">@drawable/another_btn_radio</item>
</style>

Any help would be greatly appreciated.