Dark theme stylesheet for Rocket.Chat

Because everything needs a dark theme. And because Rocket.Chat has no dark mode yet, except for the iOS app.

You can either install this as a user in your browser or as an admin globally for your Rocket.Chat installation.

• Install a Userstyle-Addon like Stylus (Firefox, Chrome)
• Create a new style and copy the content of style.css into it

Make sure to restrict the scope of the style to the domain of your Rocket.Chat installation.

• Go to Administration → Layout → Custom CSS
• Copy the content of style.css into it the Custom CSS field
• Click Save changes at the top

This theme is not finished yet. It's usable but the admin interface and other parts will remain light.