How can I add a class to the admin theme or access other $adminTheme methods from a site module?

[gornycreative]

What's the best way to access $adminTheme methods from a module setup?

I'm trying to add

$adminTheme->addClass('body','chroma');

as I would in an admin template file replacement but I am not sure where it is in the wire modules hierarchy or if there is a hook.

I've tried calling it as a module from the ready() function but it's an abstract class. Not sure what to do.

 

[gornycreative]

Never mind... I think I found the answer here: