How can I run Slack in Night Mode on Desktop app

Question

Slack themes are available in the web app using Stylish see https://userstyles.org/styles/browse?search_terms=slack

However there must be a way to use them on the Desktop application. What is the hack?

Answer 1

UPDATED LATEST! Slack desktop app now supports dark mode natively! Just got to preferences cmd+, and select Themes > Dark

UPDATED, previous hacks stopped working with release of 4.0.0.

This solution works as of July 18, 2019

see https://github.com/LanikSJ/slack-dark-mode

You may need to see instructions on https://github.com/LanikSJ/slack-dark-mode/issues/80

I will likely update this answer again when I have time to fork the repo I've posted above and improve upon it.

Answer 2

I've written a sort of small "plugin framework", where you just run a shell script to patch your slack install, and then you get the ability to enable any number of "plugins" I've written for the desktop app, one of which is a dark theme. There are instructions in the README if you'd like to load your own CSS files you've found elsewhere as well.

https://github.com/glajchs/slack-customizations