Examine source code of VivaldiFox

{
  "manifest_version": 2,
  "name": "VivaldiFox",
  "author": "Tim Nguyen",
  "version": "3.4",
  "icons": {
    "16": "icon.svg",
    "32": "icon.svg",
    "48": "icon.svg",
    "96": "icon.svg"
  },
  "description": "An add-on that allows colouring Firefox in a Vivaldi style fashion.",
  "permissions": [
    "theme",
    "tabs",
    "<all_urls>",
    "storage",
    "alarms",
    "browserSettings"
  ],
  "background": {
    "scripts": [
      "shared/settings.js",
      "background/constants.js",
      "background/color.js",
      "background/addon-state.js",
      "background/favicon-utils.js",
      "background/color-utils.js",
      "background/theme.js",
      "background/background.js"
    ]
  },
  "commands": {
    "_execute_browser_action": {}
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "data/contentscript.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options/options.html",
    "browser_style": false,
    "open_in_tab": true
  },
  "browser_action": {
    "default_title": "VivaldiFox",
    "default_icon": "icon.svg"
  },
  "applications": {
    "gecko": {
      "strict_min_version": "61.0a1",
      "id": "{93e64f70-e0b2-4d3f-927d-5cac2ed150a7}"
    }
  }
}