This means that you cannot run the applet. The pests when not of breeding age are 'baby-blue' for boys and pink for girls. Adults are in red and blue.
Dead pests are in gray.
N.B. Mac users using Netscape. You will be unable to load the 'pestcontrol.class' BUT using Microsoft Internet Explorer does not have the same problem. This is due to Netscape not yet incorporating Java 1.1. for the Macintosh. To view the pestcontrol applet please use Internet Explorer. Any comments welcome.