Edit color for code highlighting

### Description

How to edit the color of the code highlighting?
As I understand, there is no such possibility? If not, maybe it is worth giving such a possibility?

### Describe the solution you'd like

_No response_

### Describe alternatives you've considered

_No response_

The issue names no files, tests, or entry points. Start by locating the editor's code-highlighting and appearance settings, then clarify which colors should be customizable and how users should edit them. Done means users can change code-highlighting colors and the behavior is documented or demonstrated.

Written by the indexing model from the issue text.