This is discussion archived from a time before the current discussion method was installed.
Mr Death: Edited the MGS 2 entry. Snake's hair was never dyed, it was always naturally brown.
Fly: I have Word of God (and some screencaps) that disprove that, but since this is kind of a Beserk Button for MGS fans for some bizarre and inexplicable reason, I won't edit it back. (Actually, I will, but I'll put up a more diplomatic version.)
Truec: I would like to see such evidence, as I doubt it's existence. Briefing in TTS shows Snake asking for scissors, and at no point in the series has his hair ever been blond.