This issue is somewhat related to #6906.
Syntax highlighting is a great feature that I have been waiting for a long time. Thank you for that!
However, the pygment style that is used by default does not really match my terminal color configuration. Colors have poor contrast, and in the end, I cannot really benefit from syntax highlighting.

I would love to be able to choose the pygments theme from CLI options, or in a configuration file.

Another idea would be to configure the pygments theme with environment variables. This is because, pytest configuration generally depends on the project you are testing, and the configuration file is shipped in the project repository. However colors configuration will be dependent on the developper setup and should probably better remain unversioned. Environment variables allows that.

What do you think?