ruggertech

/**
 * add this code to the file ssb-interop.js
 * you can find it by going to Applications -> Slack 
 * -> right click "show package content" -> /Applications/Slack.app/Contents/Resources/app.asar.unpacked/src/static
 */
var cssURI = 'https://gist.githubusercontent.com/ruggertech/75b250418eaf6fa6a801ce897208f6c4/raw/a222b16c5a5d7d732624d8d9cd9c3ef17aa3e40f/slack-theme.css';
$.get(cssURI).then(function(css) {
   $('<style />').text(css).appendTo('body')
});

ruggertech

 body, .channel_header, # footer, .channel_title_info, # channel_topic_text {
     background: rgb(0, 43, 54);
}
 .c - message__body {
     color: rgb(153, 174, 177);
}
 # team_menu, .p - channel_sidebar {
     background: #023f4e !important;
}
 .c-presence--active {