WhatsApp Dark Mode

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "WhatsApp Dark Mode",
  "short_name": "WDM",
  "description": "Enables Dark Mode on WhatsApp Web",
  "version": "1.0.0",
  "icons": {
    "64": "images/icon.png"
  },
  "permissions": [
    "https://web.whatsapp.com/*"
  ],
  "browser_action": {
    "default_icon": {
      "64": "images/icon.png"
    },
    "default_title": "Enables Dark Mode on WhatsApp Web",
    "default_popup": "html/popup.html"
  },
  "content_security_policy": "script-src 'self' https://whatsmsg.com; object-src 'self'",
  "content_scripts": [
    {
      "matches": [
        "http://web.whatsapp.com/*",
        "https://web.whatsapp.com/*"
      ],
      "js": [
        "js/inject.js"
      ],
      "run_at": "document_end",
      "all_frames": false
    }
  ]
}