It may be much more mundane than this... If you watch the extended DVD special stuff, they do a short session on (let's call it) digital magic. They would change entire scenes from daylight to evening, or morning to afternoon, or whatever, by altering the Red-Green-Blue ratios.
They showed an example of this, and it happened to be Elijah in the picture. As they darken the day-photographed scene into late evening, Elijah's eyes went from sky-blue to something rather resembling purple... (oops.) As the whole scene darkened, so did his eyes-- it was just that the rest of the scene looked natural, but his eyes didn't.
If the scene-enhancement turned Elijah's eyes purplish, might they have turned Legolas' eyes brownish?
Alas, my post at least does belong in the Movie forums...
[ May 18, 2003: Message edited by: mark12_30 ]
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...down to the water to see the elves dance and sing upon the midsummer's eve.
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