Lovely Crafty Home: DIY Tub Surround Using Airstone = I know you can't use traditional tile on tub surrounds because they tend to flex and are not totally flat, meaning the grout will crack. This is interesting as a way to add interest to the front, though.
Add airstone (or any other) tile to your bathtub. l Decorating tubs is a great way to upgrade a boring bath, but do yourself a favour - attach the decor to a waterproof panel that you can cut to size - such as a German "Wedi" board that you can remove, should you ever need to service the tub's plumbing or want a change.
I have a 50's pinkish salmon tub with glass sliders - I framed up the outside covered in tongue and groove and a piece across top (even with the slider of the doors) ... way better looking and when door is closed you don't see the colour ... kids used to sit on ledge to dry off ..