[BUG] Conversation text becomes unreadable when permission dialog is displayed in VSCode extension

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?

When a permission dialog appears (e.g., "Allow this bash command?"), the conversation content in the background becomes very faded/washed out, making it nearly impossible to read.

This is problematic because users often need to reference the conversation context to make an informed decision about whether to allow or deny the permission request.

What Should Happen?

Expected behavior:
The conversation text should remain readable while the permission dialog is displayed, allowing users to review context before making a decision.

Actual behavior:
The conversation text becomes extremely faded/low contrast, making it difficult or impossible to read.

Suggested fix:
Reduce the opacity of the overlay backdrop
Or increase the contrast of the background text

Error Messages/Logs

Steps to Reproduce

Open Claude Code in VSCode
Ask Claude to perform an action that requires permission (e.g., run a bash command)
Observe the conversation text behind the permission dialog

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.11

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Other

Additional Information

VSCode extension
Light theme (Visual Studio 2019 Light)

<img width="727" height="553" alt="Image" src="https://github.com/user-attachments/assets/78800ef4-d1e1-4886-a3e2-3d3240a1d26e" />