Examine source code of Somtoday Dark

{
  "manifest_version": 2,
  "name": "Somtoday Dark Theme",
  "version": "0.1.5",
  "description": "Protects your eyes late at night",
  "content_scripts": [
    {
      "matches": [
        "https://augustinianum-elo.somtoday.nl/home/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "style.css"
      ]
    }
  ]
}