Can css be an opt in use at your own risk unsupported must feature

As per title. {need more a little different text here to accept body :joy:}

In V2 some CSS features are available via opt-in at your own risk.

See:
https://docs.skuid.com/latest/en/skuid/design-system-studio/extend/

Meant to say that it was something we could enable on our own behind an agreement and checkbox.