According to Star Wars Wookieepedia
Rodians typically had green skin, although variation in skin pigmentation was common, ranging from blue through to orange. Though very rare, some Rodians had a white pigmentation. This was distinctive among the race and could give rise to various appellations, such as "Jannik the White", "Evo the Blue." or Navik the Red.
What I find funny is that there is a Reeven Clan among the various clans. I wonder if that is just a coincidence, or was Revan a rodian lol.