% -*- slang -*-
% This color map was derived from GMT_copper.cpt
% Copyright (c) 1991-2004, P. Wessel & W. H. F. Smith
$1 = [0x00,0xCB,0x00,0xFF, 0xCB,0xFF,0xFF,0xFF];
$2 = [0x00,0xCB,0x00,0x9F, 0xCB,0xFF,0x9F,0xC8];
$3 = [0x00,0xCB,0x00,0x66, 0xCB,0xFF,0x66,0x80];
png_add_colormap ("copper", png_build_colormap (__tmp($1),__tmp($2),__tmp($3)));