sentences:  Various color mutations exist, including blue, cobalt, mauve, slate, dilute slate, violet, lutino (ino) and albino.The Blue and the Lutino mutations are where some colour genes have not been passed on, or have been suppressed from the original wild colour form.In the case of the lutino the micro-structure which creates the blue based colours in the normal form is not passed on to offspring when it arises; hence everywhere yellow except the face which contained the colours which make up orange.