Examine source code of Dark-Reader-Pro

{
  "manifest_version": 2,
  "name": "Dark Reader Pro",
  "version": "3.0",
  "description": "Simple global dark mode with brightness and blue light control.",
  "author": "Kantesh Murade",
  "homepage_url": "https://github.com/kanteshmurade/dark-reader-pro",
  "permissions": [
    "storage",
    "tabs",
    "<all_urls>"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "128": "icon.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "128": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "commands": {
    "toggle-dark-mode": {
      "suggested_key": {
        "default": "Ctrl+Shift+D",
        "mac": "Command+Shift+D"
      },
      "description": "Toggle dark mode globally"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "darkreaderpro-kantesh-001@example.com",
      "strict_min_version": "91.0"
    }
  }
}