Missing theme variables for test coverage highlight background

[surfinzap]

Does this issue occur when all extensions are disabled?: Yes/No

• Yes

• VS Code Version: 1.90.2
• OS Version: Win 11

Steps to Reproduce:

1. Have a repository with a written Jest tests that doesn't cover 100% of the code.
2. Run npx jest --coverage
3. Run command Jest: Toggle Coverage
4. Highlighted uncovered code cannot be themed.

When you turn on test coverage, this is the row highlights you'll get for the rows with uncovered tests (dark red and sand color):

As a VS Code theme maintainer, I want to set the custom color for these highlights. I followed the documentation for testing colors. However, none of the available variables seem to take effect. I suppose the variables for these highlights are not yet available.