Examine source code of HueHelper

{
  "manifest_version": 2,
  "name": "HueHelper",
  "default_locale": "en_US",
  "version": "0.9.2resigned1",
  "author": "Michel Gutierrez",
  "description": "Philips Hue management",
  "background": {
    "scripts": [
      "background/main.js",
      "background/vibrant.worker.min.js"
    ]
  },
  "icons": {
    "32": "content/images/icon-idle-32.png",
    "40": "content/images/icon-idle-40.png",
    "48": "content/images/icon-idle-48.png",
    "128": "content/images/icon-idle-128.png"
  },
  "browser_action": {
    "default_icon": {
      "40": "content/images/icon-idle-40.png"
    },
    "default_title": "HueHelper",
    "default_popup": "content/popup.html?panel=main"
  },
  "options_ui": {
    "page": "content/settings.html?panel=settings",
    "open_in_tab": true
  },
  "commands": {
    "color-from-tab": {
      "suggested_key": {
        "default": "Alt+Shift+U"
      },
      "description": "Set colors from current tab"
    }
  },
  "permissions": [
    "<all_urls>",
    "tabs",
    "downloads",
    "storage",
    "menus"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{dfaf37d6-3124-43ad-bb72-12ba37192b12}"
    }
  }
}