Vnartia

The Vnartia are a species native to either the Alpha, Beta, or Gamma Quadrant. They were present at Deep Space Nine for the trade negotiations in 2370. After Sisko finished tending to the arguing Klingon and Aresai ambassadors following the bombing of Garak's store, the Vnartia ambassador was extremely upset at having been put on hold. She told Sisko that, out of shame he should cut off one of his right hands, only to be reminded that humans do not regenerate limbs. (DS9 novel: Betrayal)

''The Vnartia ambassador's line about sisko cutting off ONE of his right hands perhaps indicates that they have more than one of each. She was also said to have been "swollen purple with indignation". This could mean that they have purple skin (or skin that changes color). However, it's also possible that the author was just being metaphorical.''