The 70s were wild. I remember the fixtures (Kohler) and the color, but I'd completely forgotten the fad of sunken tubs…
I remember back when I was a young thing designing dream houses that I always used the Kohler fixture template—vs. American Standard (manual drafting y'know)—because it seemed their designs were so avant garde in comparison…and available in colors American Standard could only dream of.
All too well do I remember sunken tub. We bought a home that had one. Back then, the shower was in the tub. It was a pain in the ass to shower, to say nothing about cleaning the tub. Couldn't wait to remodel that bath.