The oldest colors in the geological record have been discovered. At 1.1 billion-years-old, the bright pink pigments extracted from marine black shales of the Taoudeni Basin in Mauritania, West Africa, are actually molecular fossils of chlorophyll that were produced by ancient photosynthetic organisms - cyanobacteria.The fossils range from blood red to deep purple in their concentrated form, and bright pink when diluted and are more than half a billion years older than previous pigment discoveries. The rocks deep beneath the Sahara desert in Africa, remnants of an ancient ocean that has long since vanished, were rocks to powder (yes, you read that right, but nature has a lot more) before extracting and analyzing molecules of ancient organisms from them.