There are many options available in glass, ceramic, and porcelain tile. There are even some blue natural stone flooring. Your best bet is to visit your local tile distributor’s showroom and ask for assistance.

There are some vinyl floor patterns in light blue and there are also many ceramic tiles that would also be available.

Certainly. You can find blue marble, granite, and limestone for instance. I would stay away from polished stone in a bathroom floor, way too slippery, but you can get a textured or honed finish in any of these stones which would work nicely.

I would call around to your local tile distributers and tell them exactly what you are looking floor.