White, yellow and green would to me indicate a very peaceful, giving and spiritually aware person. I'd have to see it in person to know more though.
In disfocusing my eyes I cause a sensation on my forehead which in turn changes my brainwave patterns. It can be hard to do at times and painful but it strikes me that perhaps I'm using all three eyes to see. I can use my third eye for certain things but for auric seeing this is how it works best for me.