The UI colors are very strange

### What happened?

<img width="2560" height="1404" alt="Image" src="https://github.com/user-attachments/assets/e7f1bc4d-7b68-49dc-bbbe-fdd20e8da7fd" />

Change theme setting in config.toml can't fix this. I also tried different terminal.

### Steps to reproduce

1. install hunkdiff
2. use `hunk diff` command in termial

### Expected behavior

_No response_

### Version

0.14.1