MDN Dark Mode

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "MDN Dark Mode",
  "description": "Add a dark mode with different themes to the MDN Web Docs website. Open-Source.",
  "version": "1.0",
  "action": {
    "default_icon": {
      "16": "images/icon16.png",
      "24": "images/icon24.png",
      "32": "images/icon32.png",
      "48": "images/icon48.png",
      "64": "images/icon64.png",
      "128": "images/icon128.png",
      "256": "images/icon256.png"
    }
  },
  "icons": {
    "16": "images/icon16.png",
    "24": "images/icon24.png",
    "32": "images/icon32.png",
    "48": "images/icon48.png",
    "64": "images/icon64.png",
    "128": "images/icon128.png",
    "256": "images/icon256.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://developer.mozilla.org/*"
      ],
      "js": [
        "script.js"
      ],
      "css": [
        "extensionStyles.css"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "darkStyles.css"
      ],
      "matches": [
        "*://developer.mozilla.org/*"
      ]
    },
    {
      "resources": [
        "/images/lightbulb-solid.svg"
      ],
      "matches": [
        "*://developer.mozilla.org/*"
      ]
    },
    {
      "resources": [
        "/images/lightbulb-regular.svg"
      ],
      "matches": [
        "*://developer.mozilla.org/*"
      ]
    }
  ]
}