Black and White has
been a recurrent motif since the early days of Lost. Some of these
occurrences are most certainly symbolic, others are likely placed for
more mundane reasons like convenience or style. We'll leave it to you
to decide.
Black and White(also
Light and Dark) may refer to the struggle between good and evil,
between ignorance and knowledge, or the search for balance. Symbolic
possibilities abound.
If you see something we missed please let us know by posting in the Suggestion/Correction forum for Recurring Color