I have been trying to print 57 excel charts from 2007. All charts are on 1
sheet, but separated by pages. The first 3 pages will print in color,
perfectly. After the 3rd page, they only print in black and white or
grayscale. The same is true if I try to convert to .pdf. The only time it
looks correct is in the print preview.

Can anyone tell me how to fix this?