chromium/components/cronet/android/sample/res/values/styles.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  Copyright 2019 The Chromium Authors
  Use of this source code is governed by a BSD-style license that can be
  found in the LICENSE file.
-->

<resources>
    <style name="Theme.DevUi.DayNight" parent="@android:style/Theme.Material.Light.DarkActionBar" />
    <style name="SelectedNavigationButton">
        <item name="android:textColor">@color/navigation_selected</item>
    </style>
    <style name="UnselectedNavigationButton">
        <item name="android:textColor">@color/navigation_unselected</item>
    </style>
    <style name="MediumText" parent="@android:style/TextAppearance.Medium">
        <item name="android:textColor">@color/medium_text_color</item>
    </style>
</resources>