Musescore Lazy Dark Theme

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Musescore Lazy Dark Theme",
  "version": "0.1.1",
  "description": "A very lazy dark theme for musescore.com",
  "content_scripts": [
    {
      "matches": [
        "https://musescore.com/*"
      ],
      "css": [
        "main.css"
      ]
    }
  ],
  "page_action": {
    "default_icon": "icon.png"
  }
}