Way to invert colors of file when printing in Corel Designer X5

We use corel designer x5 to create process sheets for our assembly floors, these consists of 20+ pages of black background sheets that have pastel color isometric views of our product. The black background is needed as our operators view the process sheets on monitors. However when we need to print out a hard copy it uses up an incredible amount of toner. Is there a way to create a macro to invert the colors of the entire sheet to allow of more efficient printing?