Richter devised a mathematical formula to systematically mix permutations of the three primary colours and gray. The Cologne window is made of four-inch "Pixels" cut from original antique glass in a total of 72 colours.
of a - (sometimes called "Church with Light") is the Ibaraki Kasugaoka Church's main chapel. It was built in in the city of Ibaraki, Osaka Prefecture. This building is one of the most famous designs of Japanese architect Tadao Ando.