I would like to add a watermark similar to the PlanetPress Demo watermark that allows the data to be visible. In this situation the message would be on top of a simulated greybar. The message would be a relatively small string like VOID, CREDIT, DUPLICATE, PAST DUE, COPY, but displayed larger and at -35 degrees.
Tried this, but the fill displays on preview or print.
.watermark { text-shadow: -1px -1px 0 #000, 1px -1px 0 #000, -1px 1px 0 #000, 1px 1px 0 #000; opacity: 0.5; }