Sunny and cloudy

Most billboard posters are printed on a high quality, 120gsm blue backed billboard poster paper that is suitable for paste application. This heavier than standard weight offers greater tear resistance and easier handling and is blue backed for reduced show through of over pasted posters. During a cloudy winter day all the billboards in Milan were covered with the backside of the poster paper Blue Back. The blue color of this paper corresponds to the blue of the sunny sky and thus during this operation the sky was at the same time sunny and cloudy; in a city where the numerous billboards are able to create the perception of a second sky under the real one. http://www.orestismavroudis.com/sunny-and-cloudy