Superarctic is a homozygous incomplete dominant mutation in the pattern and colour of the snake. Superarctic stimulates melanin and reduces other pigments, specifically the background pigment. The mutation is recognised by its white background with pink or tan colours and gray blotches with big concentrations of melanin. With each shed they become lighter in colour. As hatchlings they hatch out almost black. After the first shed this dark colour has already brightened up. The eyes are solid black.