Examine source code of HubSpot Dark Mode

{
  "manifest_version": 2,
  "name": "HubSpot Dark Mode",
  "version": "1.0.0",
  "description": "Applies a sleek dark mode theme to HubSpot with Claude AI-inspired styling",
  "icons": {
    "48": "icon48.png",
    "96": "icon96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.hubspot.com/*",
        "*://*.hubspotfree.net/*"
      ],
      "css": [
        "dark-mode.css"
      ],
      "js": [
        "dark-mode.js"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "*://*.hubspot.com/*",
    "*://*.hubspotfree.net/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{296b238c-2bc3-426c-a894-8f0ffedf3977}"
    }
  }
}