Lamp

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Lamp",
  "description": "If you turn off this lamp it will darken your browser!",
  "version": "1.0",
  "author": "joak",
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html",
    "default_title": "Turns off the light!"
  },
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "64": "icon-64.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "lamp.css"
      ]
    }
  ]
}