Green Is the Colour song was a regular part of the band's shows from early 1969 through 1970, then less common in 1971. It was played for the last time during their short tour of Japan and Australia in August 1971. The song was later played by Nick Mason's Saucerful of Secrets. with: Green Is the Colour "Green Is the Colour" is a track on Pink Floyd's 1969 "More". It was composed and written by Roger Waters and sung by David Gilmour. A tin whistle is heard in the song, played by drummer Nick Mason's then-wife Lindy. A live version of the song was
Evolution of human colour vision ago and 20 45 million years ago. It eventually reached the current λmax of 430 30 million years ago. It is believed that middle and long wave sensitive pigments appeared after the final stages of short wavelength sensitive opsin pigments evolved, and that trichromatic vision was formed through interprotein epistasis. Scientists believe that the slow rate of evolution of human ancestral vision can also be attributed to slow environmental changes. It has been theorized that -shifts might have been required as human ancestors started to switch from leading nocturnal lifestyles to more diurnal lifestyles. This caused their vision to adjust