[opensuse] printing colored pdf in grayscale or black and white

Hello: I have a pdf file with colored graphics but I have only a black and white printer. When printing the file the colored parts are almost invisibly pale. I would like to print the file in grayscale or black and white so that the colored parts would be visible. I have openSUSE 12.2 with KDE 3, and adobe reader 9 and kpdf. I could not find option to print in grayscale or black and white in either one. I remember that windows adobe reader has such option. How could I print the file in black and white in openSUSE? Thanks, Istvan -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org