Stone_bathtub - this looked cool but it is 2600 pounds - probably too heavy and probably too expensive. there are some others at stoneforest.com that are about 1800 pounds - but also probably very expensive. The current fiberglass tub, when full with water weighs about 1200 pounds, and when empty is quite light (but has a poured concrete base).
maybe ... backsplash idea ? Maybe. Is the issue the wavy texture, or the color? Would like to see color with dark countertop and wooden cabinets, and consider how color works relative to floor. I also saw some illustrated as natural stone (or perhaps porcelain that simulated natural stone) that blended nicely with the natural wood cabinets. Can't find a photo.
Q