"She watches over you!"

I can't remember where I found this picture but I was looking for an image of a "luminous Virgin" that I saw advertised on the back of Tele A-Z in France about 12 or 13 years ago. "Elle veille sur vous!", that was the tag line.
The one pictured here is much more subtle. The lights are not multicoloured and, of course, she is not luminous!
Writing this has got me thinking though. Why is it that this sort of object should seem so strange to a Protestant like me? Is it the lights or is it the fact that it is the Virgin that doesn't sit well?