Throughout Hunter x Hunter we see a variety of auras, with the majority of them differing based on color and the way that they move.
For example, Gon and Killua's are white and emit from their bodies fairly rapidly, similar to Saiyans from DBZ. But then if you consider Hasuka's and Killua's brother's auras, they're purple and kind of ooze. Lastly, there's also the chimera king's royal guard's aura which is red and really tentacle-like, and the chairman of the hunter association which is every color and radiates outwardly in all directions.
So, are these characteristics just for the audience to tell a difference, or do the characters also see these differing attributes? I know they can see auras, but do they see it the same way the audience does?