Create own module suffixes?

Is it possible to add my own suffix somewhere?

Maybe instead of suffix "dark" I would like "light" with a bit lighter colors..

In the Gavern template it looks pretty easy to add, but maybe not in GameNews..

Cheers, Mats

Hi all own css changes or customization I advice add to override.css file. It will avoid further issues during updates. Of course remember to enable override.css option in template settings.