2001: A Space Odyssey (1968)
director Stanley Kubrick
script/novel Arthur C. Clarke Stanley Kubrick
cinematography Geoffrey Unsworth
special effects Douglas Trumbull
The colored lights in the Star Gate sequence were accomplished by slit scan photography
of thousands of high-contrast images on film, including op-art
paintings, architectural drawings, moire patterns, printed circuits, and
crystal structures. Known to staff as "Manhattan Project", the shots of
various nebula-like phenomena, including the expanding star field, were
colored paints and chemicals swirling in a pool-like device known as a
cloud tank, shot in slow-motion in a dark room.
http://www.youtube.com/watch?v=YbLRzabppus