Examine source code of Aulis Icon Replacement

{
  "manifest_version": 2,
  "name": "Aulis Icon Replacement",
  "description": "Verbessert die Aulis-Symbole auf der Website der HS Bremen",
  "version": "0.0.1",
  "icons": {
    "64": "icon.png"
  },
  "content_scripts": [
    {
      "js": [
        "scripts/content.js"
      ],
      "matches": [
        "https://aulis.hs-bremen.de/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{5569a14d-c1f8-4039-838d-c56cf24265e2}"
    }
  }
}