Princesses of Oz

Dorothy Gale & Ozma, created by L. Frank Baum.

I originally imagined Dot was pointing at something off in the distance, but now it kinda looks like she' trying to catch one of those sparkly lights on the end of her finger. What are those sparkly lights anyway and why I do I feel compelled to jazz up every fairy tale themed pic with them? Perhaps it's glitter coming off the rainbow. I know rainbows are more associated with the movie, but it's not like MGM has a copyright on rainbows. EDIT: Also, as I've been reminded, rainbows are a not uncommon fixture of the books as well.