Facebook is finally giving WhatsApp users a dark mode option — months after other apps made the switch (FB, TWTR, GOOG, GOOGL, AAPL)

· WhatsApp has rolled out a dark mode setting for its iPhone and Android apps, the company said in a blog post Tuesday.
· The Facebook-owned messaging app has been testing dark mode for months, but now the option is available to anyone using the latest versions of iOS and Android.
· The new feature could help minimize eye...