/usr/share/slsh/cmaps/seis.map is in slsh 2.3.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 | % -*- slang -*-
% This color map was derived from GMT_seis.cpt
% Copyright (c) 1991-2004, P. Wessel & W. H. F. Smith
$1 = [0x00,0x1C,0xAA,0xFF, 0x1C,0x38,0xFF,0xFF, 0x38,0x55,0xFF,0xFF, 0x55,0x71,0xFF,0xFF,
0x71,0x8D,0xFF,0xFF, 0x8D,0xAA,0xFF,0x5A, 0xAA,0xC6,0x5A,0x00, 0xC6,0xE3,0x00,0x00, 0xE3,0xFF,0x00,0x00];
$2 = [0x00,0x1C,0x00,0x00, 0x1C,0x38,0x00,0x55, 0x38,0x55,0x55,0xAA, 0x55,0x71,0xAA,0xFF,
0x71,0x8D,0xFF,0xFF, 0x8D,0xAA,0xFF,0xFF, 0xAA,0xC6,0xFF,0xF0, 0xC6,0xE3,0xF0,0x50, 0xE3,0xFF,0x50,0x00];
$3 = [0x00,0x1C,0x00,0x00, 0x1C,0x38,0x00,0x00, 0x38,0x55,0x00,0x00, 0x55,0x71,0x00,0x00,
0x71,0x8D,0x00,0x00, 0x8D,0xAA,0x00,0x1E, 0xAA,0xC6,0x1E,0x6E, 0xC6,0xE3,0x6E,0xFF, 0xE3,0xFF,0xFF,0xCD];
png_add_colormap ("seis", png_build_colormap (__tmp($1),__tmp($2),__tmp($3)));
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