Before you settle on the size and shape of your pool, think about how you will use it. Does it need to be long and deep enough for serious swimming or simply sized for a refreshing plunge after a long, hot day? There’s an almost endless array of sizes and shapes. Of course, the dimensions of your block will be a crucial determining factor. Then there’s the interior colour. Dramatic indigo, tropical turquoise or a subtle shade in between? Colour sets your pool’s mood.