My lift of Heidi's simply beautiful page, thank you for the inspiration. Part of the "Lights Across Canada" every December, the trees in Confederation Square near the War Memorial have blue, purple and green lights. They are beautiful.
ETA: Thank you for your kind comments, but no extraction, just a night sky on the black background! Thanks for looking!

KPertiet-Classic cardstock in the night, Template Inspiration 010414 (lifted the star layer)

PKnox-frosted acrylic alpha (retired)