Workplace collaboration app Slack is starting to test a dark mode for users, joining others, like the mail app for Windows 10 and Facebook Messenger. It’s not available to everyone just yet, but it is rolling out to beta testers.

from https://www.theverge.com/2019/3/9/18257801/slack-dark-mode-how-to-enable-android-ios-apple-google-beta-tester
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