Luthien's description

[Celeviel]

My friends and I were having an argument over a rather stupid thing but basically we were discussion the description of luthien for this game we're building from the Lords of Middle Earth books...

from what i've read in the silmarillion about luthien,

"Blue was her raiment as the unclouded heaven,
but her eyes were grey as the starlit evening;
her mantle was sewn with golden flowers,
but her hair was dark as the shadows of twilight."

what i gathered of her physically was that she was over 6 feet tall of course, had really dark, maybe black hair, and her eyes were bluish grey, hence the starlit evening sky... my friends on the other hand believed that she had either blonde or silver hair and had violet-blue eyes... i don't see how that could be a possibility, given the description of her as clear as it could be, but i'm also interested what everyone has to say and what they envision of luthien... also if any of you have read the lords of middle earth book volume 2, i'm interested in hearing your comments as well...