Demo how to use ColorNURBS to color a NURBS surface in Grasshopper / Rhino by specifying values at control points.
Link to forum discussion:
https://discourse.mcneel.com/t/colorn...
link to the .gha file and .gh demo file:
https://github.com/thelazyengineer/Co...
1) download .gha file
2) copy and paste into the /../grasshopper/libraries/ folder
3) start rhino / grasshopper
4) open .gh demo file