Sorry for the multiple emails today.
I have been looking at removing references to cmap0 and cmap1 in wxwidgets. I noticed that in plplotP.h the switches for state function calls include PLSTATE_COLOR1 and PLSTATE_COLOR2 and there are apropriate functions in the wxWidgets drivers to deal with these. I'm not sure what the appropriate driver response should be to these calls. Should it be to set the driver's internal colour from cmap0/cmap1 or set it from curcolor?