Examine source code of HELMO Dark Mode

{
  "name": "HELMO Dark Mode",
  "description": "Qui n'a jamais rêvé d'accéder à HELMO en mode sombre?",
  "version": "1.0",
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "https://sso1.helmo.be/*",
        "https://learn-technique.helmo.be/*",
        "https://learn-paramedical.helmo.be/*",
        "https://learn-social.helmo.be/*",
        "https://learn-economique.helmo.be/*",
        "https://learn-pedagogique.helmo.be/*",
        "https://learn-transversal.helmo.be/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{cd551ee6-f9b4-4dd9-bae1-33c32d827027}"
    }
  }
}