I understand Mary shining a bit. New moms almost always have a special look about them after they experience birth. Sometimes even moms who adopt have that glow. Dads get it, too, in a different way. The look on their faces of bemused amazement is beautiful to behold. It generally fades a bit with subsequent kids, but you can tell new parents by the proud tired expressions they share. Expressions beaming with happiness.
Babies? I have never seen a newborn glow. I get the Holy Family idea and the thought that since Jesus is the Son of God, maybe he should. Yet, it unnerves me. If I was Mary or Joseph and saw my baby radiating light, I'd do more than praise His birth! Although, all that light probably helped Joseph out as he and Mary birthed this special child. And the shepherds? They had witnessed angels, a heavenly host of them, so maybe they were ready for an illuminated infant wrapped in cloths lying in a manger. Although, the glowing part wasn't in the description the angels gave them.
The depictions man gives to experiences are often confusing. Especially, ones not witnessed with hard evidence. A pink glowing towheaded active baby in a manger is not how I imagine the birth of Jesus. The funniest part? I have been known to put glitter around my own coloring and painting of crafts with the Holy Family! Tradition is strong with this one. (insert sarcastic smiley!)
I may need to rethink my own artistic endeavors and when I color my baby Jesus' characters dark skinned with dark hair, I should leave off the glitter. Even if I do adore the stuff!