Earthrise

Not sure about The History of Art in Three Colours  (surely a case can be made for red). The second episode, Blue, featured Titian, Picasso and Yves Klein. The programme showed that until the precious stone lapis lazuli reached Venice from Afghanistan in the middle ages, blue was a colour little seen in western art. Then ultramarine became associated with depictions of the Virgin Mary until Titian began using it as he liked. It also made a link to the colour of the earth as viewed from outer space ("beyond the blue horizon"). This is a NASA image from the July 1969 Apollo 11 moon mission.