# Cursor Agent side panel custom Syntax highlighting breaks

**URL:** <https://forum.cursor.com/t/cursor-agent-side-panel-custom-syntax-highlighting-breaks/153846>\
**Category:** Bug Reports\
**Tags:** byok, themes, chat\
**Created:** [March 6, 2026, 11:39am UTC](https://forum.cursor.com/t/cursor-agent-side-panel-custom-syntax-highlighting-breaks/153846 "2026-03-06T11:39:53Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![Jeromekem](https://avatars.discourse-cdn.com/v4/letter/j/43a26b/32.png) [@Jeromekem](https://forum.cursor.com/u/Jeromekem)\
**Post date:** [March 6, 2026, 5:54pm UTC](https://forum.cursor.com/t/cursor-agent-side-panel-custom-syntax-highlighting-breaks/153846/5 "2026-03-06T17:54:16Z")

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Dear Dean Rie and team,

I restored an older Cursor backup, including both USER/.cursor and USER/Library/Application Support/Cursor, but the issue persists. It seems likely related to a recent update at your side.

Please let me know if there are plans to address this or if there is a way to manually alter the chat window settings. I would really appreciate being able to use custom syntax highlighting again. Now it’s hard to use, since some colors are hard to distinguish on a white background in chat (see below) 🙂 .

![Screenshot 2026-03-09 at 09.41.09](https://us1.discourse-cdn.com/cursor1/original/3X/f/b/fb8abae24d3e373fbd0c46e17c405bb65e7be0ef.png)

Warm regards & hope to hear,

Jeroen

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