/usr/share/gwyddion/gradients/Wyko is in gwyddion-common 2.50-2.
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 11 12 13 | Gwyddion resource GwyGradient
0 0.00392157 0.0431373 0.419608 1
0.0874751 0.0745098 0.121569 0.756863 1
0.178926 0.160784 0.286275 0.94902 1
0.270378 0.247059 0.52549 0.988235 1
0.363817 0.352941 0.788235 0.854902 1
0.455268 0.454902 0.980392 0.592157 1
0.550696 0.552941 0.988235 0.341176 1
0.640159 0.647059 0.8 0.145098 1
0.735586 0.733333 0.521569 0.0352941 1
0.829026 0.807843 0.290196 0 1
0.916501 0.909804 0.121569 0.00392157 1
1 0.996078 0.0509804 0.0156863 1
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