After some experiments I did before for this project, I found that I prefer B & W photos to show my memory as they somehow emphasize the contents in the photograph itself, without any distraction of colour, tint and hue. 

In reality, the colours in photos will gradually fade due to the oxygen and sunshine, regardless to the colour the structure and figure will be more clear, attention will be drawn by something more emotional in the photograph, that's how the memory saving systems in humans' brains work.

In B & W, the essence of the photo can be seen much more obviously.