I've been seeing auras since I could remember, my "gift" is not very strong, since I can only see the outter layer (There are seven layers, apparently) I've read books and done some research over the years. The colours that I see are wavey and sometimes very weak or sometimes very bright. I only see it around living things. Seeing auras has saved me by avoiding dangerous situations. I also find that when I'm around individuals that have other abilities my abilities ignite.

Words and Shapes cannot trigger colours, and that I think is what this article is about.
People who associate words with colours may have synaesthesia.

I thought this article was interesting, but it is narrowed research because it doesn't explain people who actually see these human magnetic feilds...