If you’re fond of sending out messages in the middle of the night, you’ll probably welcome this update from Facebook. The company has finally started testing dark mode for its Messenger app. Web app developer Jane Wong reveals on Twitter, “Facebook Messenger, seemingly due to prolonged external nagging, has started public testing Dark Mode in certain countries. They have put up a fair warning that Dark Mode isn't everywhere yet so don't complain when some UI burns your eyes off.” There isn’t a specific timeline yet when it’ll be coming out but you can now see how it’s going to look like if you do get the feature and decide to use it. Having a dark mode option works on the idea that this limits screen glare and protects your peepers from effects of blue light when you use your phone in the dark or in the middle of the night.