What is a Rainbow Baby?

I see this asked a lot, especially on birth/baby forums because the term "Rainbow Baby" is used a lot on them. I dont know who wrote this. I found it on the internet and I just absolutely adore it. No other words explain it more perfectly than these words right here.

Rainbow babies: In some circles, babies born to families after the loss of a child are referred to as "Rainbow Babies." The idea is that the baby is like a rainbow after a storm. "Rainbow Babies" is the understanding that the beauty of a rainbow does not negate the ravages of the storm. When a rainbow appears, it doesn't mean the storm never happened or that the family is not still dealing with its aftermath. What it means is that something beautiful and full of light has appeared in the midst of the darkness and clouds. Storm clouds may still hover but the rainbow provides a counterbalance of color, energy, hope and love.