T+Albinos (Tyrosinase positive albinos), also known as caramel albinos are very interesting looking; their body colour is a light, buttery yellow to a pale orange.
•
T-Albinos (Tyrosinase negative albinos) are very similar to the T+ in appearance; they are usually red in body colour with white body markings and a bright white belly colour.
Excerpt from The Kinetics of the Reaction Inactivation of Tyrosinase during its Catalysis of the Aerobic Oxidation of Catechol
The leucistic trait is due to a recessive mutation in the gene for Tyrosinase (TYR), an enzyme responsible for the production of melanins.