Examine source code of SuperFerris

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "SuperFerris",
  "description": "Ferris is loving its best web browser, animated by A. L. Palmer, drawed by Karen Rustad Tölva",
  "author": "LeChatP",
  "homepage_url": "https://github.com/LeChatP",
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  },
  "theme": {
    "images": {
      "theme_frame": "ferris.png"
    },
    "colors": {
      "frame": "#232323",
      "tab_background_text": "#FFFFFF"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b34f4ba0-0e0e-482b-8ca1-6e5d508d48c1}"
    }
  }
}