/usr/share/gmt/cpt/split.cpt is in gmt-common 5.2.1+dfsg-3build1.
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1 2 3 4 5 6 7 8 9 | # $Id: split.cpt 12822 2014-01-31 23:39:56Z remko $
#
# Split colors that has black around midpoint
# Designed by P. Wessel, SOEST
#
-1 128/128/255 -0.5 0/0/128
-0.5 0/0/128 0 0/0/0
0 0/0/0 0.5 128/0/0
0.5 128/0/0 1 255/128/128
|