The green light in Vertigo, and how we got it back

Every print of Vertigo that circulated between 1958 and the early nineties had drifted. The Technicolor separations were intact, but nobody had gone back to them.

Madeleine steps out of green light three times in the film. On a faded print you register it as fog. Restored, it reads as what Hitchcock meant: she is arriving from somewhere else.