I think you could also match the tile from the shower/tub wall. But really, are you sure you need one? For sure there's no need for a "backsplash" near a tub that's surrounded by tiled walls, so not sure what you're even suggesting there....

Really!!! The backsplash should be the same class of material as your stone, peel and stick is garbage and an insult to what you have already have if that really is your bathroom in the pictures. As for around the tub it already is tiles is this some joke or what.

The counter seems glass to me. Not sure I could handle glass tile.. but So you think I should match with counter top?

Behind the soaking tub is I meant there is a small rectangle shelf area( I dont know what to call) that is just painted in gray.

Sink Backsplash.. Design wise..I don’t think I need it. But we used about a year, it already looks it need some fresh paint. Maybe I just go ahead and paint...lol

That's weird about the niche -- I'd have used the same tile as on the shower floor! it's like the contractor ran short two sheets and just shrugged. But maybe you'd be ok with a soap dish and leaving it the way it is?

Be sure that the paint behind your sinks is eggshell or semigloss. Beyond that, if you're running into trouble, then I guess you have your answer. Can you match the shower tile?

Plastic tile is cheesy anywhere. It’s like wearing cheap Amazon import sparkle shoes oozing glue out from under your foot with your Dior mother of the bride dress.