.config/GIMP/2.10/tool-options/gimp-gradient-tool

   1 # GIMP gimp-gradient-tool options
   2
   3 (gradient "FG to BG (RGB)")
   4 (brush-size 51)
   5 (brush-spacing 0.050000000000000003)
   6 (brush-hardness 0.25)
   7 (gradient-reverse yes)
   8
   9 # end of gimp-gradient-tool options