When you turn on Color it starts recording all of the pictures that others in your local area are taking. All of those photos _are stored in your "visual diary"_ forever!
This is a "life recorder" app. Remember this: http://www.wired.com/culture/culturereviews/magazine/17-09/p... ?
In the future you'll be making a documentary of your life just by moving through space, and I think that's a beautiful concept. Your grandkids will be able explore how you lived your day to day life as witnessed by those around you.