Examine source code of Material Mathgreen

{
  "name": "Material Mathgreen",
  "version": "1.0.6",
  "description": "A better mathgreen",
  "permissions": [],
  "content_scripts": [
    {
      "js": [
        "injector.js"
      ],
      "matches": [
        "*://mathgreen.fr/*",
        "*://www.mathgreen.fr/*"
      ]
    }
  ],
  "web_accessible_resources": [
    "css/*"
  ],
  "icons": {},
  "manifest_version": 2
}