Examine source code of Themedd

{
  "manifest_version": 2,
  "name": "Themed!",
  "version": "1.0.2resigned1",
  "homepage_url": "https://github.com/Rishabh570/Themed",
  "description": "Get themed however you want...!",
  "icons": {
    "16": "assets/icons/icon16.png",
    "32": "assets/icons/icon32.png",
    "64": "assets/icons/icon64.png",
    "128": "assets/icons/icon128.png"
  },
  "applications": {
    "gecko": {
      "id": "{13347aa5-9743-463e-b896-796114c1a56c}"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Themed",
    "default_icon": "assets/icons/icon32.png",
    "browser_style": true
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true
  },
  "permissions": [
    "storage",
    "theme",
    "tabs",
    "activeTab",
    "alarms",
    "geolocation",
    "https://www.google.co.in/*",
    "https://theysaidso.com/*",
    "https://fonts.googleapis.com/*",
    "<all_urls>"
  ],
  "content_security_policy": "style-src 'self' 'unsafe-inline'; script-src 'self'; object-src 'self'; img-src 'self'",
  "commands": {
    "next-theme": {
      "suggested_key": {
        "default": "Ctrl+Shift+V"
      },
      "description": "Send a 'next-theme' event"
    }
  }
}