Printing a colored layer in Black

Hello, on Solidworks drawings, I have the center lines on a layer named "center", w/color red. However, when I print, I'd like them to print out black. I can't use the print in black/grayscale option because part of our title block is in color, and need that to remain. There must be a setting for this, but I'm at a loss as to where it is. Many thanks in advance!