Android Question Switch custom material theme on run time

CreateResource(values, theme.xml,
<resources>
    <style name="ThemeLight" parent="@android:style/Theme.Holo.NoActionBar">
    </style>   
</resources>)

CreateResource(values-v21, theme.xml,
<resources>
  <style name="ThemeLight" parent="@android:style/Theme.Material.Light">
       <item name="android:windowNoTitle">true</item>
       <item name="android:windowActionBar">false</item>
       <item name="android:textColor">#000000</item> <!-- menu text,, msgbox title -->
       <item name="android:textColorSecondary">#AAAAAA</item> <!-- inactive editText line,, scrollbar -->
       <item name="android:colorPrimary">#1976D2</item> <!-- action bar -->
       <item name="android:colorPrimaryDark">#EEEEEE</item> <!-- status bar -->
       <item name="android:colorAccent">#1976D2</item> <!-- checkboxes,, switches,, etc. -->
       <item name="android:colorControlNormal">#AAAAAA</item> <!-- inactive checkboxes -->
   </style>
</resources>)

CreateResource(values, themedark.xml,
<resources>
    <style name="ThemeDark" parent="@android:style/Theme.Holo.NoActionBar">
    </style>   
</resources>)

CreateResource(values-v21, themedark.xml,
<resources>
  <style name="ThemeDark" parent="@android:style/Theme.Material">
       <item name="android:windowNoTitle">true</item>
       <item name="android:windowActionBar">false</item>
       <item name="android:textColor">#FFFFFF</item> <!-- menu text,, msgbox title -->
       <item name="android:textColorSecondary">#AAAAAA</item> <!-- inactive editText line,, scrollbar -->
       <item name="android:colorPrimary">#1976D2</item> <!-- action bar -->
       <item name="android:colorPrimaryDark">#000000</item> <!-- status bar -->
       <item name="android:colorAccent">#1976D2</item> <!-- checkboxes,, switches,, etc. -->
       <item name="android:colorControlNormal">#AAAAAA</item> <!-- inactive checkboxes -->
   </style>
</resources>)