It has already been mentioned, but BODY TATTOOS!
Now-a-days, there is a large abundance of gear that shows some skin. It doesn't make sense for a species that has facial tattoos (Zabrak, Rattataki, etc.) to have no ink below the face. Sith tattoos typically cover a large portion of the body.
Also, pretty much any character customization features (hairstyles, hair color, facial tattoos, cybernetics, eye colors, etc.).