Button Style

 <style name="OrangeButton" parent="AppTheme">
        <item name="android:background">@drawable/orange_button</item>
        <item name="android:textAppearance">@style/OrangeButtonTextAppearance</item>
    </style>

    <style name="OrangeButtonTextAppearance" parent="android:TextAppearance.Large">
        <item name="android:textColor">#ffffff</item>
    </style>