chrome/android/java/res_night/values-night/colors.xml

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

<resources>
    <!-- TODO(huayinz): Change the colors. -->
    <color name="modern_primary_color">#610000FF</color>
</resources>