One of the things I've done for as long as I can remember is try to visualize the subjects of black and white photographs in color, almost always to no avail. I've spent most of my life thinking of the people as old souls, particularly the children. I assumed their lives were probably marked with more hardships and suffering than mine, hence their serious look.
Well, that may be true, but take a look at these kids. They look pretty contemporary and fresh-faced, don't they?
American Life: Rare Color Photographs During WWII