Not that I think I'll get something in time, but you never know. I would like a long description rather than a short/show. My costume idea is "Glacier." So the idea is the blending of white to that bright icy blue. Perhaps a glittering white near the top and a bright azure at the hem? Or maybe a shimmering lace of white over a bright blue? Azure is the only blue I can think of - would like to avoid ice blue if possible.
Here's a picture with the colors I'm thinking of:
http://www.my-photo-blog.com/wp-content/uploads/2010/09/Kayaking-Bear-Glacier-Lagoon.jpg
See how it's white near the top in the sun and deep blue at the bottom?