There are no relationships among color therapy, low level laser therapy, and light therapy, all of which seem to have made their way into this discussion. Low level laser therapy, which is what the two referenced listings are showing, is an unproven treatment, which appears to have some short-term effect on painful arthritis conditions. No one understands how it works, and although it appears to be safe, meta-analysis has failed to prove its effectiveness. Color therapy is grouped in with "alternative" treatments, has no proof of effectiveness for any studied application, and seems to give results that are no different than painting walls a new color or changing the color of your clothing, both of which are fun and can make you feel good, but are not "treatments". Light therapy has many applications in medicine, for a wide variety of different conditions, but type of light, intensity, treatment, etc. is specific to each condition, and may vary with the individual.
From Wikipedia:
Light therapy or phototherapy (classically referred to as hellotherapy) consists of exposure to daylight or to specific wavelengths of light using polychromatic polarised light, lasers, light-emitting diodes, fluorescent lamps, dichroic lamps or very bright, full-spectrum light, usually controlled with various devices. The light is administered for a prescribed amount of time and, in some cases, at a specific time of day.
Common use of the term is associated with the treatment of skin disorders (chiefly psoriasis), sleep disorder and some psychiatric disorders. Light therapy directed at the skin is also used to treat acne vulgaris, eczema and neonatal jaundice. Light therapy which strikes the retina of the eyes is used to treat circadian rhythm disorders such as delayed sleep phase disorder and can also be used to treat seasonal affective disorder, with some support for its use also with non-seasonal psychiatric disorders.
