[UI] setup default device colors, themes and etc

[pturchik]

For example we can't set cursor color of the input on android. Only way it is set cursor color in strings.xml:

  <resources>
    <!-- ...other configs... -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
      <item name="android:textColor">#000000</item>
      <!-- sets cursor color -->
      <item name="colorControlActivated">#2962FF</item>
    </style>
    <!-- ...other configs... -->
  </resources>

Also we can set other colors like selection text highlight color.
Need to investigate about ios posibilities.

We can create link script for this.