.CHART SET TRANS COLOR 
This subroutine sets the transparency color for the "current" chart spec.
  Usage: 
      PASS         <color_spec_name>          FIELD            SHARE? N
      *        OR
      PASS         <color_value>              FIELD            SHARE? N
      GOSUB    0CD .CHART SET TRANS COLOR
      *        Check for error 
      IF       0CD .CHART SET TRANS COLOR     NE
  Description: 
This subroutine sets the transparency color for the "current" chart. You must set Transparency Type to Single or Single Color via 
.CHART SET TRANS TYPE for this to have any effect.
The parameter is optional, if blank or not passed it will be reset to the default value.
After setting the transparency color, the transparency color spec becomes the "current" color spec.
See 
ColorSpec for more information on working with colors.
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-- 
JeanNeron - 2011-09-23