Examine source code of Base Design

{
  "manifest_version": 2,
  "name": "Base",
  "version": "0.5",
  "description": "Base Design is an international network of creative studios specializing in branding and communications.",
  "browser_action": {
    "default_icon": "icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{3d768af4-7b82-4c46-bb4b-5c2bc4028a92}"
    }
  }
}