SOLVED - saving custom re-colouring of existing theme

[lacrimula_falsa]

Hi there.

I'm not sure if this is the right place to ask this, but here goes:

I have recoloured EVERYTHING on my current journal theme (plus I added a background image). I don't want to lose all that work when I switch themes. Is there a way to save my custom colours in a reusable way in case I later switch back to my current theme?

Thanks in advance for any help
-LF

EDIT: Thank you all for the help. I've now found a method that works for me. (Saving the contents of the wizard layer.) :)