; OKCOLORS
;---------------------------------------------------------------
;! Sets adverb PLCOLORS to use less ink (white background)
;# Procedure TV PLOT
;-----------------------------------------------------------------------
;;  Copyright (C) 2020
;;  Associated Universities, Inc. Washington DC, USA.
;;
;;  This program is free software; you can redistribute it and/or
;;  modify it under the terms of the GNU General Public License as
;;  published by the Free Software Foundation; either version 2 of
;;  the License, or (at your option) any later version.
;;
;;  This program is distributed in the hope that it will be useful,
;;  but WITHOUT ANY WARRANTY; without even the implied warranty of
;;  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;  GNU General Public License for more details.
;;
;;  You should have received a copy of the GNU General Public
;;  License along with this program; if not, write to the Free
;;  Software Foundation, Inc., 675 Massachusetts Ave, Cambridge,
;;  MA 02139, USA.
;;
;;  Correspondence concerning AIPS should be addressed as follows:
;;         Internet email: aipsmail@nrao.edu.
;;         Postal address: AIPS Project Office
;;                         National Radio Astronomy Observatory
;;                         520 Edgemont Road
;;                         Charlottesville, VA 22903-2475 USA
;-----------------------------------------------------------------------
OKCOLORS  LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
OKCOLORS:  Sets colors for LWPLA to use less ink
         @      output adverbs
DOCOLOR  @                         > 0 -> use PLCOLORS
PLCOLORS @         0.0         1.0 (R,G,B) colors of line types
----------------------------------------------------------------
OKCOLORS
Type: Procedure
Use: OKCOLORS sets the LWPLA adverbs DOCOLOR to 1 and PLCOLORS to
     colors which will use less ink than the standard TV colors.
     Mostly this means a white background and some contrasting
     colors.  This procedure works whether or not you have a TV
     running.  It sets PLCOLORS to
        PLCOLORS =0.3,0,0, 0.06,0.5,0, 0.5,0.33,0.5, 0,0.6,0.6
        PLCOLORS(1,9) ~ 0.3,0,0, 1,1,1
Output adverbs:
  DOCOLOR.....Set to 1.0 to tell LWPLA to use PLCOLORS.
  PLCOLORS....Line types 1-4 get colors dark red, dark green, purple,
              and dark cyan.  Types 5-8 ("dark" vectors) are black;
              Type 9 (labeling) is dark red, and the background is
              white.
----------------------------------------------------------------