This problem is due to your computer's printer driver. When you press Print in WRPLOT View, the program sends a message to the Printer Driver, which then sends a message to the Printer. When you select the color fills, the printer driver tells the printer to print shades of gray. When you select the cross-hatching, the printer driver tells the printer to print cross-hatching. Some printer drivers don't know how to make the printer do this and the printer therefore simply prints solid black. You can solve this problem by trying a different printer driver.