title: How to set colorPrimary and colorPrimaryDark in nativescript
body: <p>before continuing i have to say that i've read a lot of questions about this and any solution didn't work for me.
  I am working with nativescript(v2.1.1) and i'm trying to change the status bar and actionbar color using the xml files approach, but i couldn't make it work.
  Here is my attempt:</p>
  
  <p>path: app/App_Resources/Android/values/colors.xml</p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;resources&gt;
      &lt;color name="ns_primary"&gt;#3f51b5&lt;/color&gt;
      &lt;color name="ns_primaryDark"&gt;#2137aa&lt;/color&gt;
      &lt;color name="ns_accent"&gt;#3f51b5&lt;/color&gt;
  &lt;/resources&gt;
  </code></pre>
  
  <p>path: app/App_Resources/Android/values/styles.xml</p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;resources xmlns:android="http://schemas.android.com/apk/res/android"&gt;
      &lt;style name="AppThemeBase" parent="Theme.AppCompat.Light.NoActionBar"&gt;
          &lt;item name="toolbarStyle"&gt;@style/NativeScriptToolbarStyle&lt;/item&gt;
  
          &lt;item name="colorPrimary"&gt;@color/ns_primary&lt;/item&gt;
          &lt;item name="colorPrimaryDark"&gt;@color/ns_primaryDark&lt;/item&gt;
          &lt;item name="colorAccent"&gt;@color/ns_accent&lt;/item&gt;
      &lt;/style&gt;
  
      &lt;style name="AppTheme" parent="AppThemeBase"&gt;
      &lt;/style&gt;
  
      &lt;style name="NativeScriptToolbarStyleBase" parent="Widget.AppCompat.Toolbar"&gt;
          &lt;item name="android:background"&gt;@color/ns_primary&lt;/item&gt;
          &lt;item name="theme"&gt;@style/ThemeOverlay.AppCompat.ActionBar&lt;/item&gt;
          &lt;item name="popupTheme"&gt;@style/ThemeOverlay.AppCompat&lt;/item&gt;
      &lt;/style&gt;
  
      &lt;style name="NativeScriptToolbarStyle" parent="NativeScriptToolbarStyleBase"&gt;
      &lt;/style&gt;
  &lt;/resources&gt;
  </code></pre>
  
  <p>path: app/App_Resources/Android/values-v21/colors.xml</p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;resources&gt;
      &lt;color name="ns_primary"&gt;#3F51B5&lt;/color&gt;
      &lt;color name="ns_primaryDark"&gt;#2137AA&lt;/color&gt;
      &lt;color name="ns_accent"&gt;#3F51B5&lt;/color&gt;
  &lt;/resources&gt;
  </code></pre>
  
  <p>path: app/App_Resources/Android/values-v21/styles.xml</p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;resources&gt;
  &lt;style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar"&gt;
      &lt;item name="colorPrimary"&gt;@color/ns_primary&lt;/item&gt;
      &lt;item name="colorPrimaryDark"&gt;@color/ns_primaryDark&lt;/item&gt;
  &lt;/style&gt;
  &lt;/resources&gt;
  </code></pre>
  
  <p>Does anyone know if i am missing something?</p>