This 58mm resin Epic Dice d20 contains the color scheme:

Rainbow Essences! Including: violets, reds, blues, greens, oranges, yellows, and magentas – w/ White Numbers.

Every die is a different array and swirl of each color, thus a purchase of 2 or more will have 2 very unique dice shipped!

Great for use in near-statistically perfect rolling, or even as a spin-down health tracker!
See below for more details.