GOPTIONS DEVICE=XCOLOR;
Normally, no specification is necessary as the default will be set correctly. If you are running X-Windows on a monochrome terminal, you can change the driver to XBW (Black-and-White) or XGRAY (Grayscale).
For more information about using X-Windows in general, see the ITS Help System at
and for more information about running SAS in X mode, see the "SAS Under UNIX" document at:
http://www.usc.edu/its/doc/statistics/sas/sasunix/