Debug/Diagnostic color is far too dark

[gitfool]

While investigating issues with #3240, I temporarily enabled Debug/Diagnostic logging for the integration tests, during which the log rendering is far too dark and becomes unreadable in some environments.

GitHub Actions run 2052071902:

Azure Pipelines build 17082:

Here's another screenshot of a normal GitHub Actions run showing the color spectrum for different LogLevel/Verbosity:

And the same for a normal Azure Pipelines build:

Finally, I've seen similar problems when building local in WSL.

[augustoproiete]

Agreed. I think we need custom console color palettes for different CI systems.

TeamCity has the opposite problem (not dark enough) having a white background, so parts of the log is not easily readable.

(selected text)

[gitfool]

One more for good measure... reading the log output with Visual Studio Code, in dark mode, with the ANSI Colors extension: