Tom, I've only done this a couple of times, and I know what you mean about not caring for this technique. Sometimes it's way over done and looks too fakey. But if done right, it sets a wonderful mood and gets a point across.  Here's the one I did for some friends who were expecting a baby girl...

http://www.renderosity.com/mod/gallery/index.php?image_id=1345229&member

I did another one with the baby in black & white, and just the eyes blue, but it seemed to me that it looked over saturated because her eyes were actually that  blue and seemed too much, but on the other hand if I toned it down, it wasn't really the color of her eyes...

I'm off to have a look at your photo now...   Akemi