[ Aura (energetical Body surrounding the physical presence, used in Chakra- teachings) and Soma (Body)]
I like the colorful blends and the interesting smell. The oils were supposedly created in spiritual sessions by Vicky Wall, an english Lady.
The background is color therapy:
"A tool for personal growth and life change
Behind the beauty of the Aura-Soma products is a deeper purpose: our colour choices reveal our inner themes and gifts. Aura-Soma’s principle range is a sequence of colour combination bottles called Equilibrium. These bottles offer a mirror in which to recognise our needs, our truth and our potential. Choosing bottles from this range is a way to bring light and understanding to what is important to you. Your choice will also indicate which other Aura-Soma products will be most appropriate and helpful for you at this time. This is especially so when your choice is made and explored with a skilled Aura-Soma Practitioner. This ability to bring awareness through colour to our life’s situations is the primary purpose of the Aura-Soma system. With awareness can come new choices, growth and change." (www.auracolorlight.com)
I used them years ago for my personal use, and now sometimes for Tantra Sessions, although they are not supposed to be used that way

I like the Idea behind it, and the beautiful arramgement of colors, and even if it`s a pseudoscience, it enlightens rooms and makes for beautiful eye candy, and interesting experiences and smells

Here you can click to have an "Aura Soma Online Reading" (defined by the bottles you choose)
http://www.aurasoma-sedona.com/AS_Reading/asr.html
And here`s a little more about chromotherapy:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1297510/