Microsoft Teams has a dark theme, unlike Slack

Microsoft Teams, the team communication app that Microsoft launched out of preview today, could be a better bet than Slack for certain groups for several reasons. For one thing, it integrates with Office 365.
But there’s one feature of Microsoft Teams that really gets me excited, one that shows that Microsoft cares about the little things. And little things are important if you’re going to live in an app.
Out of the box Microsoft Teams looks bright and cheery, with white and subdued