Okay I just decided to customize a theme and use it for a part of my forum, which forces users to default to my theme. So the one that I previously had is going to be switched with the one that I have customized. Problem is this, I have a lot of subforums in that section and I am not planning on going to each one and changing the style from there.
Is it somehow possible to switch the Style ID's so my new theme is now default for that whole section because it has the same style ID as my old one? Is that possible?