[BUG] User message highlighting has too dark a background making text unreadable

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

User message highlighting has too dark a background making text unreadable

What Should Happen?

the highlight should be much lighter

Error Messages/Logs

Steps to Reproduce

enter any prompt into claude code via macos terminal

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.0.5 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_