Examine source code of alien chestnut

{
  "theme": {
    "images": {
      "theme_frame": "footer.jpg"
    },
    "colors": {
      "frame": "#380808",
      "tab_background_text": "#c91a1a"
    }
  },
  "version": "2.0",
  "name": "alien chestnut",
  "manifest_version": 2,
  "description": "alien chestnut"
}