darkify_slack.sh

#! /bin/bash

# Don't want to interpret variables whilst reading from the HEREDOC - thus the single quotes... potto
cat << 'EOF' >> /Applications/Slack.app/Contents/Resources/app.asar.unpacked/src/static/ssb-interop.js
document.addEventListener('DOMContentLoaded', function() {
 $.ajax({
   url: 'https://gist.githubusercontent.com/jonstuebe/bddadd625c0e8a66d430022ef652fc2a/raw/fe750d4886b593207ffa1331ad93a84200828812/slack-dark.css',
   success: function(css) {
     $("<style></style>").appendTo('head').html(css);
   }
 });
});
EOF
echo If Slack.app is already running, refresh with CMD-R