Examine source code of Zoad: Custom Loader

{
  "name": "Zoad: Custom Loader",
  "short_name": "Zoad",
  "description": "A custom theme loader for your Firefox homepage.",
  "developer": {
    "name": "ZimCodes",
    "url": "https://github.com/ZimCodes/zoad-firefox"
  },
  "version": "2.2.0",
  "manifest_version": 2,
  "icons": {
    "48": "icons/zoad-logo.png",
    "96": "icons/zoad-logo@2x.png"
  },
  "permissions": [
    "theme",
    "activeTab",
    "tabs",
    "unlimitedStorage",
    "storage"
  ],
  "browser_action": {
    "browser_style": true,
    "default_icon": "zoad-logo.svg",
    "default_title": "Zoad themes",
    "default_popup": "popup/index.html"
  },
  "options_ui": {
    "page": "options/index.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "chrome_url_overrides": {
    "newtab": "homepage/index.html"
  },
  "chrome_settings_overrides": {
    "homepage": "homepage/index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "zimcodes@pm.me",
      "strict_min_version": "57.0"
    }
  }
}