Stained glass windows were brought into cathedrals as a way of passively teaching religious stories and creating peaceful, spiritual emotions in the attendees.
The earliest history of stained glass has been lost over the years, but the Egyptians and Mesopotamians are known to have worked with colored glass in jewelry and windows. The "Dark Ages" were a time when stained glass was removed from cathedrals. 
What was the effect of colored glass windows?  The colors filtered by the sunlight through the windows bring the frequencies and qualities of each color and element. Blue brings peace, loyalty, devotion, tranquility as well as physical health benefits. Green gives balance, love, relaxed breathing and more. Purple, Red and Yellow are often found in windows, but Orange is less often used. The next time you are fortunate to see a window, let yourself experience the effects of the window's colors.  What is the story it's telling you? What are the sacred symbols, geometry and other patterns that are affecting you?  

Self-healing with Color and Light Therapy are abilities everyone has.  You don't need any special lamps or tools. 

Have a sore muscle? Visualize a ball of BLUE light and send it into the area of discomfort with a gentle exhale.  Visualize this light relaxing the cramped or stressed muscle. Continue for 1-3 minutes and see how it relaxes.  

Likewise, have tooth pain?  Visualize and send a ball of BLUE light into the tooth. Visualize this light transforming any infection or inflammation in the area. Keep pulsing the BLUE light into the tooth for 3 minutes as you continue what you are doing.  

For ACNE or other SKIN INFLAMMATIONS - visualize BLUE light on the affected area for 3 minutes to reduce the inflammation and relax the cells. After this treatment, visualize RED light to generate fresh, healthy, new skin cells.  It Works!

BLUE light is antibiotic, calming, transformative.   RED light is regenerative, activating, invigorating. Working with your own ability to heal yourself, you can use Color and Light Therapy for honoring and caring for your physical, emotional, mental, energy and spiritual bodies.

The Color in Words.   What color do you associate with the words  "Peace"?   Green?  "Harmony" - Blue?   "Creativity" - Orange?    "Passion" - Red?   Each word carries not only an audible frequency, but a color frequency as well.     When you look at words do you see colors, feel colors or hear colors?  It's an interesting exercise to find the color correspondence to words.  Letters of the alphabet have their own color frequency too. Numbers have their individual frequencies.  

Experiment with words and numbers and see what colors come to your mind.  It will help increase your sensitivity and awareness of colors.   Some people have this ability naturally. Synesthesia is the neurological condition that automatically translates letters and words into colors.  Research into this ability has accelerated in recent years to help us better understand cognitive and perceptive processes within the brain.   What colors do you associate with "Water", "Air", "Belief", "Health", "Wisdom" ...