http://houzz.com/photos/6142675

When we see green water, we humans tend to think of algae or mould - it's hard to change that way of thinking. A pale , sandy pebblecrete will look like a sandy lagoon, whereas a blue will be more eye-catching. We replaced the second liner of our pool with blue tiles . It's quite a large pool, so we went for a dark blue, I still love the colour nearly ten years later.

Barnes.... I actually know of a product that cleans that off with ease!!! It's new has had testing and has been through the process of intellectual property and is now currently under production. If you are interested I can try source you some.

The closest I have found currently is below.....where the arcs and straight line can be laid in any orientation and line up to make a continous, but random pattern. The difference is that the tiles I am searching for are encaustic not porcelain, the back ground is coloured not white and the “lines” are double lines made up of more than one colour. They are definitely not bespoke.