Since we're on the topic of Galadriel's hair, this random thought probably wouldn't be out of place:
Reading this thread, I was reminded of a post I made more than a couple of years ago in one of the 'Galadriel chapters' in the FotR CbC, in which I pointed out that, in parallel of Telperion and Laurelin, Celeborn had silver hair while Galadriel's hair was golden. Could there be any basis in this seeming assignment of silver as masculine and gold feminine?
And yes, I know that Celebrian is female, but you can't deny that these two pairs are special.