Aesthetics / Themes

I am new to Scrivner and am looking forward to what it can and will do for my writing however I am curious.
Can I change the Theme/Aesthetic of each Binder I am working in? It would help to have a different Aesthetic for each binder to help put me in the right head space so far I can only get one theme/aesthetic for everything it seems! Please help!
Sienna Rose

Themes are per Application, not per Project. Selecting another Theme will change it for all projects.

But that can be done in seconds, so…