How can I get a "teal based" mother of pearl finish on my walls?
You can add mica powders to paint to give a pearlized look..... https://www.amazon.com/BLACK-DIAMOND-PIGMENTS-Pigment-Plastidip/dp/B076YZGYPP/ref=sr_1_14?keywords=teal+mica+paint+additive&qid=1572143352&sr=8-14
I think Modern Masters has a clear pearlized finish. Just paint walls your background colors and add that on top.
The specialty paint section at your local paint store, home improvement store, or art supply shop should have the appropriate finishes.