"James Cameron used a lot of refrences from the Condor peoples of central "Mesoamerica" and south america but also took refrences from other cultures as well , Take the word "Avatar" in its spiritual meaning and you find
India , Search Krishana Blue Avatar and you will find a lot of images that could in part be the inspiration for some of visual refrences Cameron may have used to inspire the Na'Vi people. Cameron openly admitted to borrowing the name of the film and the blue color of the Na’vi from sacred Hindu texts http://themoderatevoice.com/65785/avatar-james-camerons-regrettable-ode-to-krishna-day-ukraine/"

"For some reason some christans think the Color "Blue" represents something Satanic , I can rember back in the early 80's one of my friends told me he was not allowed to watch the smurfs because the elders in there church told
his parents they where satanic (Yes realy) here is a great example of just how far some people take this http://www.cuttingedge.org/ce1021.html
"