[Feature Request] Customizable prompt and output colors

While we are able to change the theme for Claude in terminal, I have a suggestion to add further customizations. During long sessions, it is hard to distinguish user's input vs output provided. Please see screenshots:

<img width="1549" alt="Image" src="https://github.com/user-attachments/assets/7cb3ee3e-07e1-4b02-be30-0e5570e7a3ec" />

Maybe it can be nested here in /config

<img width="2468" alt="Image" src="https://github.com/user-attachments/assets/52a6d29d-5f03-49c1-aa2f-6b0ed6db6087" />

• User prompt styling: foreground/background color, prepending symbol

Thank you for consideration!