This Temple was established in the 1930s after a woman named Ivah Bergh Whitten was cured of an Incurable disease, and she claimed it was done through "Color Awareness". Color Awareness is something like a Zodiac for colors that says Colors have different healing properties and are associated with different things. The members of this temple attempt to find out what Color they are born under, then let that guide their lives.
I am not saying that this is a 100% accurate science, but there are some studies that show different colors of light can have effects on the brain, and I am sure there are studies about colors that are on materials instead of in light spectrums also, but all of these studies have to do with light spectrums.
Recently a Photoreceptor known as Melanopsin was discovered in the Human eye, it is special because it does not just function as a receptor, but the receptor actually has a deeper effects on our brain because it is meant to maintain your sleep cycle and other things that have to do with the 24 hour cycle we are used to.You have probably heard someone say "The Blue light of a computer screen can make you stay awake longer without meaning too" and this actually has scientific basis. If you grow plants, you know that plants respond to light and that the flower Cycle usually requires a red spectrum of light.
http://en.wikipedia.org/wiki/Melanopsin
Phytochrome is the molecule in plants that is sensitive to red light.
http://en.wikipedia.org/wiki/Phytochrome
Here is the Light Research Center's study on Red light
http://www.lrc.rpi.edu/resources/newsroom/pr_story.asp?id=253#.VK8cdCvF9lo
Here is the Light Research Center's study on the effects of light on the Endocrine System
http://www.hindawi.com/journals/ije/2010/829351/
Here is what Harvard says about blue light
http://www.health.harvard.edu/newsletters/Harvard_Health_Letter/2012/May/blue-light-has-a-dark-side/
Blue Light compared to Caffeine in a study
http://www.plosone.org/article/info:doi/10.1371/journal.pone.0076707
This paper explains a test where Blue and Green light were tested against each other in an MRI in a group of people.
http://www.ncbi.nlm.nih.gov/pubmed/21628552
This paper explain how if someone was exposed to Orange light, they had different results on a test.
http://www.sciencedaily.com/releases/2014/03/140310152023.htm
This explains a double blind study that was done that showed if your ear canal is exposed to light, your brain has more cognitive function
http://www.science20.com/news_articles/brain_tissue_responsive_light_says_study-90499
If you watch the Space Ghost Coast to Coast episode with Timothy Leary before he died (you can find it somewhere online if you look hard enough) he was talking about how he was able to use lights to stimulate LSD like hallucinations in people and even got them to see angels.