rarest eye color is GREEN
Astatine
The rarest diamond colour is the naturally occurring red colour. All naturally coloured diamonds have a further grade designation on this scale:FaintVery LightLightFancy LightFancyFancy DarkFancy IntenseFancy DeepFancy VividThe Fancy Vivid colour designation is the most expensive grade.Read more, below.
The rarest color for an Aurora Borealis is purple and orange in the aurora australis
Bigfoot
Red is rarest-around 25 percent
Yellow is said to be the most popular, black in the middle and the rarest color would be chocolate.
Wind
A guy named Guy invented the color red no one "invented" red it is a natural coloring occurring in nature repeatedly
The rarest color is bright apple green with flashes of the red, gold and orange fire.
In the earth Astatine is rarest naturally occurring element, less than 30 grams for entire crust.
black