I want this calendar

Ink Calendar designed by Spanish designer Oscar Diaz is a bit unusual calendar that uses the capillary action of ink spreading across paper to display the date. Each day the ink spreads across a sheet of paper of a month displaying new date – the ink is absorbed slowly and therefore numbers are displayed every day. So you need to change paper and ink every month. Moreover the inks are of different colours, depending on our perception of the weather on that month (3 shades of green in spring, orange and red in summer, yellow in autumn, dark blue in December).

TITLE : INK CALENDAR
DESIGNER: Oscar Diaz ( http://www.oscar-diaz.net)
DIMENSIONS: 420 X 595 mm
MATERIALS: Paper and ink

http://design.architecture.sk/2010/03/29/ink-calendar-by-oscar-diaz/

I want one and I don't think you can buy them anywhere !! :(