Iridescent.
The property of certain surfaces that appear to change color as the angle of view or the angle of illumination changes.
Bubbles, butterfly wings, sequins, glitter all sum this up perfectly.
Shimmery and beautiful.
Images:
1, 2, 3, 4, 5, 6, 7, background
More of my iridescent findings on my Pinterest board
http://pinterest.com/joannegriffin/iridescent/