Color: Gray Zebra *

it is the star after the color I am curios about

It means it is a deviant

You need to select parents that have same skin color or/and skin pattern genes. A baby born as homozygous (having two copies of the same gene) for skin color or skin pattern has a 1/10 chance to develop a deviant color when maturing. This mutation is phenotypic and not inherited by the offsprings of an affected pet. A gene that produces a deviant phenotype will be marked with
The color name of such pet gets an asterisk (*) symbol to mark deviance.