|Metro station in Paris|
This isn't to say that you can't colorize a black and white photo because you can. This type of colorization is a bit tougher process, but if you watch the colorization video, you'll find out it's easier than you think because of the overlay coloring option.
In the above image, I took a shortcut (no layers) in creating the color in the sign (or taking out the black and white). I used the Sponge Tool, which has an option to desaturate. Then, I selected the text of the sign and inversed it (Select>Inverse). The rest was easy. I colored in the entire frame with the soft brush, taking away all of the color around the sign.
marilyn monroe prints