This is a closeup of one of the vertical window mullions around which the frost pictures formed one night last week. The sun was just coming up when I took these photos. It was mostly overcast day and the frost looked white so...
I decided to play with the photo. This is what it looked like when I inverted the colours.
And this is what it looked like when I added a slight bit of posterized filter.
I am linking to Mandarin Orange Monday here