Examine source code of Gemini Cosmic Theme

{
  "manifest_version": 3,
  "name": "Gemini Cosmic Theme",
  "version": "1.5.3",
  "description": "Gemini-inspired Firefox appearance theme with reliable local wallpaper upload, drag-and-drop import, editable accent swatches even while disabled, original RatioWorks scenes, Google-hosted image import, efficiency controls, and built-in legal/privacy information.",
  "author": "RatioWorks",
  "browser_specific_settings": {
    "gecko": {
      "id": "gemini-cosmic-theme@ratioworks",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "action": {
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    },
    "default_title": "Gemini Cosmic Theme",
    "default_popup": "popup/popup.html"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://gstatic.com/*",
    "https://*.gstatic.com/*",
    "https://googleusercontent.com/*",
    "https://*.googleusercontent.com/*"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; img-src 'self' data: blob: https://gstatic.com https://*.gstatic.com https://googleusercontent.com https://*.googleusercontent.com; connect-src 'self' https://gstatic.com https://*.gstatic.com https://googleusercontent.com https://*.googleusercontent.com"
  },
  "content_scripts": [
    {
      "matches": [
        "https://gemini.google.com/*",
        "https://*.gemini.google.com/*"
      ],
      "css": [
        "styles/theme.css"
      ],
      "js": [
        "scripts/content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "styles/wallpapers/*.svg"
      ],
      "matches": [
        "https://gemini.google.com/*",
        "https://*.gemini.google.com/*"
      ]
    }
  ]
}