[BUG] The code background in Claud chat appears in black background with light VC Code theme.

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?

I have light theme enabled for VS Code. Claude for VS code shows chat in light background but any code snippets do not respect the VS Code theme settings (light /dark). This stark contract is off-putting and sometimes hard to read.

<img width="1108" height="403" alt="Image" src="https://github.com/user-attachments/assets/d4446e28-205a-46e9-a15a-ddd1afdab743" />

What Should Happen?

The code snippet within the Claude chat window in VS Code should switch between light/dark based on theme settings.

Error Messages/Logs

Steps to Reproduce

1. Enable light theme in VS Code
2. Start chat with Claude
3. Invoke some action where Claude will display some code snippet.
4. Verify code snippet background is dark

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.126 (VS Code extension)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other

Additional Information

_No response_