jira dark theme on custom URL (in google chrome)

• Install Night Mode for Jira and enable
• Edit config to add your custom jira/confluence URLs (2 places in file)
  Somewhere like this: 
  ~/.config/google-chrome/Default/Extensions/nlgc*/2.3_0/manifest.json
• In chrome open chrome://extensions/
• Load unpacked
• Select folder that contains the manifest.json file.
• Refresh jira/confluence