Dark Mode for Google classroom

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "name": "Dark Mode for Google classroom",
    "version": "1.0.0.0",
    "description": "This extension changes the theme of google classroom to dark.",
    "manifest_version": 3,
    "action": {
        "default_icon": "icon.png"
    },
    "content_scripts": [
        {
            "matches": [
                "https:\/\/*.classroom.google.com\/*"
            ],
            "js": [
                "app.js"
            ]
        }
    ]
}