add custom android system-level colors

Author: hawkrives

android/app/src/main/res/values-v23/styles.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
+        <item name="android:windowLightStatusBar">true</item>
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+        <item name="colorAccent">@color/colorAccent</item>
+    </style>
+</resources>

android/app/src/main/res/values/colors.xml

@@ -3,6 +3,11 @@
     <!-- Change the color value for your needs -->
     <color name="colorAccent">@color/purple</color>
 
+    <!-- this is used (in our app) solely for the app switcher color -->
+    <color name="colorPrimary">#FFC107</color>
+    <!-- this is used when the app is starting to define the status bar color -->
+    <color name="colorPrimaryDark">#C4C4C4</color>
+
     <color name="black">#242121</color>
     <color name="darkGray">#53585A</color>
     <color name="mediumGray">#E0DAD6</color>

android/app/src/main/res/values/styles.xml

@@ -3,6 +3,8 @@
     <!-- Base application theme. -->
     <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
         <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
         <item name="colorAccent">@color/colorAccent</item>
     </style>