This extension only works on the Jira Website and only on the specific Backlog View starting with https://*.atlassian.net/jira/software/. If you're using a different Project Type this extension will not work. The extension does not work out of the box, you need to first configure in Board Settings displaying extra fields under the Card Layout tab. Make sure you add the Status field as the first Extra Field for both the Backlog and Active Sprint sections. UPDATE (v1.0.2): We now load all of the project statuses from Jira - all of your projects custom statuses should now be stored and color-highlighted correctly.