Examine source code of Heli-attack

{
  "theme": {
    "images": {
      "theme_frame": "sr_09a_heli.jpg"
    },
    "colors": {
      "frame": "#cf1d1d",
      "tab_background_text": "#0eb031"
    }
  },
  "version": "2.0",
  "name": "Heli-attack",
  "manifest_version": 2,
  "description": "This is a heli attack"
}