Question:

How do I specify the color of text labels?

Example:

Try this:

   ! a sample plot
   go fland 60 black basemap

   ! a standard black label (pen=1 default -- same as using "@P1")
   label 50 -60 -1 0 .2 Here is a label in black

   ! a red label
   label 50 -80 -1 0 .2 @P2Here is a label in red

   ! a white label -- redefine pen 6 to be white (100% on R,G, and B)
   ppl color 6 100,100,100
   label 50 -80 -1 0 .2 @P6Here is a label in white

Solution:

Use "@Pn" in your label string to select among the 6 predefined line/text colors as in the examples above. Try

   yes? GO line_samples

If the color you need is not among the default choices you can redefine any of them using the "PPL COLOR" command (see PPL COLOR in the Ferret documention, chapter PLOT+ Enhancements Guide). The color settings will be applied on the hard copy, too.