Somatic

Somatic is a random, non-hereditary mutation that may occur in any breeding. This mutation creates dark, hard edged patches of colour on the body. The patches may be jagged and broken, but should have distinct, hard edges with no speckling or roaning. Somatic patches may have a slight gradient and a subtle halo.

Somatic should be chosen from the following slider.
Colour near the bottom has a more saturated tone.