That’s unfortunate, Georgia! I’m sorry the quiz didn’t seem to be inclusive of everyone. I’m sure there are more out there. I think we even have a quiz about auras! I’ll have to find it when I make it to my computer 
As far as I know, your aura can change regularly. I don’t know too much about Auras, to be honest, but I think we have some posts here with some info!
Weekly Witchy CHALLENGE - Reading Auras