Here is a solution, as I have not searched for the equation on the gradient, here is a way that will work if you stay in Grasshopper Gradient.It uses the fact that Color is transformed to point in Grasshopper, points that are in a cube from {-1,-1,-1} to {1,1,1}
I put a Graph Mapper in order for you to tune the density of points.
I
from_gradient_to_populate_points.gh (190.0 KB)