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?