Young russet kittens have colour and markings largely identical to tabby kittens of the same age and base colour, regardless of whether the kitten is Agouti (A-) or non-agouti (aa) in genotype. However, the tail-tip, ped paws and nose leather are pale in russets. As the kitten grows, the dark, solid eumelanin areas gradually appear lighter or redder, starting at the head which usually turns entirely. The nose leather is pink and the pad paws are pale, later losing all melanin to become bright pink.
1-2 weeks after arrival of the sample in the lab