For the color and design geeks, Rice was kind enough to include Pantone and Hex color values. If you don't know what that means, consult Google.
Rice explained his process to Thrillist:
"It was created from screenshots from the same NBC camera over several days in Photoshop," he said. "Hex color values were created by averaging the color in the pool and then converted to Pantone Coated color process values."
Allegedly, the color change posed no health threat to divers and polo players, and has since been attributed to the addition of an unauthorized 80 liters of hydrogen peroxide, according to the Independent. This led to the pool being completely drained of its 1 million gallons and refilled. Let's hear it for sustainability!