Adding colour to old photographs can have an amazing effect, indeed removing colour from more modern pictures can have much the same result. Many photos used for advertising will use splash colours to get the viewers attention, they remove all the colours except the saleable item and your eye is immediately drawn to it.
The same can be done with your old B&W’s, add colour to the main subject and it becomes the very thing advertisers seek to offer and tempt you with.
B&W or Colour?
This photoshopped example below could be mistaken for an old picture, maybe around the 1940’s, that has had a splash of colour added to the main subject. It’s actually a modern day photo turned into B&W then colour added for impact. A little more photoshopping was needed when I did this to remove some tell tail signs of its true age like for instance, a reflection in the door was of a modern collapsible chair. Which ever way you choose to look at it, the visual impact is quite impressive and the great thing is that this can be applied to many of your old or new photos.