Examine source code of Dark Mode Switch

{
  "manifest_version": 3,
  "name": "Dark Mode Switch",
  "version": "1.0.12",
  "description": "Turn dark mode on or off for each website.",
  "icons": {
    "16": "icons/moon.svg",
    "32": "icons/moon.svg",
    "48": "icons/moon.svg",
    "96": "icons/moon.svg"
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "action": {
    "default_title": "Dark Mode Switch",
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/moon.svg",
      "32": "icons/moon.svg"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a2b1db9d-c969-4d02-ad68-bed0ea7ffdae}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}