Examine source code of Dark Ritual (dark theme)

{
  "manifest_version": 2,
  "name": "Dark Ritual",
  "version": "1.1.0",
  "description": "Ultra lightweight dark mode for Firefox. Alternative to Dark Reader with schedule & color controls.",
  "permissions": [
    "storage",
    "alarms",
    "tabs"
  ],
  "background": {
    "scripts": [
      "shared.js",
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "shared.js",
        "content.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "DarkRitual",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "64": "icons/icon-64.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9c2d3d7b-1a5f-4b9d-8d2f-6c4e7a91b2f0}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {}
  },
  "icons": {
    "32": "icons/icon-32.png",
    "64": "icons/icon-64.png"
  }
}