The green ink on currency never dries by design. Also the green can't be reproduced accurately by color printers because they mix the blue and yellows to get green.
You can test the green ink on any bill by dragging it across a piece of paper with your fingenail as a backing, the paper should have a green streak on it.
148 posted on 04/07/2005 4:40:03 PM PDT by PeaceBeWithYou
(De Oppresso Liber! (50 million and counting in Afganistan and Iraq))