app/src/main/res/values/themes.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="Theme.SettingsBase" parent="@android:style/Theme.Material.Settings" />

    <style name="Theme.Settings" parent="Theme.SettingsBase">
        <!--<item name="@*android:preferenceHeaderPanelStyle">@style/PreferenceHeaderPanelSinglePane</item>-->
        <!--<item name="@*android:preferencePanelStyle">@style/PreferencePanelSinglePane</item>-->
        <!--<item name="@*android:preferenceListStyle">@style/PreferenceHeaderListSinglePane</item>-->
        <!--<item name="@*android:preferenceFragmentListStyle">@style/PreferenceFragmentListSinglePane</item>-->
        <!--<item name="@*android:preferenceFragmentStyle">@style/PreferenceFragmentStyle</item>-->
        <!--<item name="@*android:preferenceFragmentPaddingSide">@dimen/settings_side_margin</item>-->

        <!--<item name="apnPreferenceStyle">@style/ApnPreference</item>-->

        <!--<item name="ic_menu_add">@drawable/ic_menu_add_dark</item>-->
        <!--<item name="ic_menu_moreoverflow">@*android:drawable/ic_menu_moreoverflow_holo_dark</item>-->
        <!--<item name="ic_wps">@drawable/ic_wps_light</item>-->
        <!--<item name="wifi_signal">@drawable/wifi_signal_teal</item>-->
        <!--<item name="side_margin">@dimen/settings_side_margin</item>-->

        <!--<item name="switchBarTheme">@style/Theme.SwitchBar.Settings</item>-->

        <item name="preferenceBackgroundColor">@drawable/preference_background</item>

        <!-- For all Alert Dialogs -->
        <!--<item name="android:alertDialogTheme">@style/Theme.AlertDialog</item>-->

        <!-- LockPatternView colors -->
        <!--<item name="@*android:regularColor">@color/lock_pattern_view_regular_color</item>-->
        <!--<item name="@*android:successColor">@color/lock_pattern_view_success_color</item>-->
        <!--<item name="@*android:errorColor">@color/lock_pattern_view_error_color</item>-->

        <!-- For the TimePicker -->
        <!--<item name="@android:timePickerStyle">@style/Widget.TimePicker</item>-->
    </style>

    <style name="Theme.DialogWhenLarge" parent="@android:style/Theme.Material.Light.DialogWhenLarge">
        <!-- Explicitly override the background color. -->
        <item name="android:colorBackground">@android:color/white</item>

        <!-- Used by the ActionBar -->
        <item name="android:colorPrimary">@color/theme_primary</item>
        <!-- Used by the StatusBar -->
        <item name="android:colorPrimaryDark">@color/theme_primary_dark</item>
        <!-- Used by controls, e.g. CheckBox, ProgressBar, etc. -->
        <item name="android:colorAccent">@color/theme_accent</item>

        <item name="preferenceBackgroundColor">@drawable/preference_background</item>
    </style>
</resources>