more colo(u)rs in a simple 2D color plot?

[Chris Taylor <chris_taylor@ncsu.edu>]

I am attempting to create a 2D color plot using the GUI (or by code) 
where the points vary according to the z-column (continuous).  My 
problem comes when I try to specify any of the color schemes (e.g. User 
1).  My ultimate goal would be to  generate a user define color scheme 
that would represent a "full spectrum" of colors and use those colors in 
the 2D color plot (and corresponding legend).  I have had some success 
using such a color scheme using image(), but can't seem to get the same 
results on more simple plots.  I am using SPlus 6.1 on Win2k.
Thanks,

-Chris