Selected text doesn't contrast well with the background

[AndrewDeanMS]

Describe the bug

I'm running from Windows Terminal. Even setting the theme to high contrast, the difference between the background, the selected text background, and the text is not great:

Using the default theme, it's even worse:

Affected version

Copilot CLI v1.0.22

Steps to reproduce the behavior

1. copilot
2. select some text in the session

Expected behavior

I'd like to have the same behavior as Windows Terminal:

Additional context

This is Windows, running Terminal, in PowerShell 7.4.14. Color Scheme is Campbell