# Modifying the Processing Editor Appearance

**URL:** https://discourse.processing.org/t/modifying-the-processing-editor-appearance/49174
**Category:** Processing
**Created:** [August 16, 2026, 7:12pm UTC](https://discourse.processing.org/t/modifying-the-processing-editor-appearance/49174 "2026-08-16T19:12:14Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![glv](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/glv/32/18785_2.png) [@glv](https://discourse.processing.org/u/glv)
#### Post date: [August 16, 2026, 7:12pm UTC](https://discourse.processing.org/t/modifying-the-processing-editor-appearance/49174/1 "2026-08-16T19:12:14Z")

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Hello folks!

How can I modify the font size of the line numbers in Processing?  
It does not scale along with the code font size.

VS Code on left and Processing 4.5.6 on right:

 ![image](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/3X/c/5/c5c5eacdfe8b483d07307ddeaddd6aa10190be16.png)

_Solution_  
`editor.gutter.text.font=processing.mono,bold,18`

Update applied:

 ![image](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/3X/a/c/ac9e03c2b2b270745d9d208a1a2078628647ad91.png)

The Processing menu bar across the top is also unreadable with a dark theme.

_Claude AI_ stated:

`Processing's menu bar (File/Edit/Sketch...) shares the editor's dark background, a Swing/FlatLaf feature that merges the title bar into the window content. Its text color isn't exposed in theme.txt`

`:)`