Color therapy or Chromotherapy- 

This alternative medicine therapy is classified by its practitioners as a “vibrational therapy” because color is produced by electromagnetic waves.  Typically the therapy conflates feelings about color with the ability to employ color as therapy.   Color therapy may use gemstones, candles, lamps, crystal wands, crystal and glass prisms, colored fabrics, color bath treatments, colored eye lenses, and lasers.  These are used to balance the aura fields and the physical, emotional, spiritual, or mental energies. 

Painbytes Assessment: Two thumbs down.  No scientific basis- this is a belief system rather than a medical treatment.