[TYPO3] CSS from extension managed by core

[Christian Lerrahn]

Hi,
I'd like to generate some CSS in an extension from templates and then
hand it over to the core to take care of it. Is that possible? I
realise that I could just write my own temporary file which I then
refer to in the header but I would like the core to take care of
everything once the CSS is final. How do I do that?

Cheers,
Christian