Examine source code of Notion Styler

{
  "manifest_version": 3,
  "name": "Notion Styler",
  "version": "1.0.0",
  "description": "Enhance Notion with a powerful styling sidebar. Apply colors, fonts, alignment, and resize images with ease.",
  "icons": {
    "16": "icons/icon128.png",
    "48": "icons/icon128.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_title": "Notion Styler",
    "default_icon": {
      "16": "icons/icon128.png",
      "48": "icons/icon128.png",
      "128": "icons/icon128.png"
    }
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://www.notion.so/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.notion.so/*"
      ],
      "js": [
        "contentScript.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "sidebar.html",
        "sidebar.css",
        "sidebar.js"
      ],
      "matches": [
        "https://www.notion.so/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "notion-styler@devflux.apps.com"
    }
  }
}