/usr/share/gwyddion/gradients/Spring 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 | Gwyddion resource GwyGradient
0 0 0 0 1
0.25 0.059669 0.380392 0.293608 1
0.5 0.084395 0.65098 0.025529 1
0.75 0.758756 0.85098 0.560646 1
1 1 1 1 1
|