Free high resolution close up sky blue colorized photo of frost or ice crystals on glass. This macro photograph shows a close up view of frost that formed on a window over a cold night. The photo has been colorized a light blue, sky blue or azure color. You can see the texture of the frozen ice crystals with a mottled or abstract pattern. Great background image for a web page or blog, desktop wallpaper or texture for Photoshop. Free picture for any use.