I like your soap!
I’ve spent entirely too much time looking for inspiration photos of designs/color schemes that I think would work with discoloring FOs. I haven’t found all that much.
There’s this one:
Browsing soap pics
and this one that would be reasonably straightforward with an FO that discolors to tan:
Discoloring FOs work for ombre type designs (this one is mine):
August 2021 SMF Soap Challenge - Ombre Designs
I can’t find a photo of a particular soap I made a couple of years using a fair amount of uncolored batter with pastel pink and grey mica portions and a light tan discoloring FO. The FO accelerated the batch which made it a bear to mold, but the effect on the colors was interesting. It looked antique, but not in a bad way.