For someone who favors the color blue,  I  especially find this film visually interesting to watch.  Various shades of blue are dominantly used all throughout the film's entirety, from the walls in the shower rooms to the towels, cool and soothing water, goggles and even the front signage of the sports center where the pool is located has the color blue.  As much as there's no concrete conflict to watch out for,  the eyes are nevertheless treated to a visual rendering of cool shades of color.