Chameleon Bloodline

"Next to the Cobra Bloodline, the Chameleon are the most mutated of the Naga Bloodlines. Fortunately, Chameleon mutations are rarely severe and can even be beneficial at times. One such mutation has actually stabilized and become a trait of the Bloodline: all Chameleon have the ability to change their skin color to match their surroundings. This makes them exceptional scouts and (in times of war) spies. Another common mutation is the ability to breath water. This mutation is common enough that the Chameleon are often relegated to the task of gaurding the aquatic egg-nests of the Naga.

"Chameleons tend to be charming and outgoing. They enjoy interacting with other species as well as their own race, and are known for their gregarious natures." -(D&D: Oriental Adventures: Rokugan p27-28)