Examine source code of Illuminator for Loomen

{
  "browser_specific_settings": {
    "gecko": {
      "id": "illuminator@loomen",
      "strict_min_version": "53.0"
    }
  },
  "manifest_version": 2,
  "name": "Illuminator for Loomen",
  "version": "0.1",
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false,
    "browser_style": true,
    "chrome_style": true
  },
  "icons": {
    "16": "icons/16.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "permissions": [
    "tabs",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://loomen.carnet.hr/course/view.php*"
      ],
      "js": [
        "content.js"
      ]
    }
  ]
}