Background Changer

manifest.json

{
  "manifest_version": 3,
  "name": "Background Changer",
  "description": "Changes background of google.com",
  "version": "1.0.1",
  "icons": {
    "16": "/images/icon16.png",
    "48": "/images/icon48.png",
    "128": "/images/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.google.com/*"
      ],
      "css": [
        "/main.css"
      ]
    }
  ],
  "update_url": "https://edge.microsoft.com/extensionwebstorebase/v1/crx"
}