proc registry list startat="COLORNAMES";
run;

http://blogs.sas.com/content/iml/2012/10/22/whats-in-a-name/?utm_source=dlvr.it&utm_medium=twitter

If you want to see some of the color names that SAS recognizes, run the following statements, which will print a list of colors to the SAS log:

Specify colors in SAS statistical graphics procedures

color

SAS