Examine source code of Fokus

{
  "applications": {
    "gecko": {
      "id": "fokus@aaronraimist.com",
      "strict_min_version": "45.0"
    }
  },
  "content_scripts": [
    {
      "js": [
        "fokus.min.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "description": "Emphasized text-highlighting",
  "icons": {
    "16": "fokus16.png",
    "48": "fokus48.png",
    "128": "fokus128.png"
  },
  "manifest_version": 2,
  "name": "Fokus",
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "storage"
  ],
  "version": "1.8resigned1"
}