I am considering doing this for my alt character, and it is most definitely possible!
For the body of the costume, I was thinking of doing appropriately colored vinyl scalemail-like design for a full body suit (torso, arms, and legs). I'd use makeup with painted lines for the scales on the face/neck to match the scalemail design. All of that would have the rest of the costume/armor over it. Not sure what to do with the head except cover the ears entirely, maybe a latex "bald cap" colored or dyed appropriately, and/or wear a helmet or other headgear.
I was thinking red for salamanderkyn or green for general lizardkyn. Or go crazy multicolor for chameleonkyn.
Racials: Racial dodge, Racial Assassinate (Rogue :ninja: )