Spark UI Dark Mode Chrome Extension

Chrome extension that enables dark mode for:

• Apache Spark application UI (http://<host>:4040, 4041, ...)
• Spark History Server (http://<host>:18080)

How to run

1. Open Chrome and go to chrome://extensions.
2. Enable Developer mode (top-right toggle).
3. Click Load unpacked.
4. Select this project folder: spark-ui-dark-mode-extension.
5. Open a Spark UI or Spark History Server page.
6. Click the extension icon and toggle Enable dark mode.

Notes

• The enabled/disabled state is saved in Chrome sync storage.
• If a tab was already open, refresh it once if styles do not appear immediately.