Hello,

In python this would be an easy task, but I think you want to do it without and explain it from scratch would be a bit hard. But there are methods without python:

A simple possibility would be to implement it with steps:

1. Sort your CSV file by the energy
2. Import the data as you did
3. Convert the cloner object (press C), now the first object should be the point with the smallest energy value, the last one with the biggest
4. Group the objects into a desired number of steps. So if you want 10 steps put the first tenth in one group, the second tenth in one group, and so on.
5. Make a material for every step and put it on the group. You can also experiment with the variation shader if you want to automate the texturing process: https://www.cineversity.com/vidplaytut/new_in_release_17_quickstart_variation_shader_for_random_colors
6. Tell me if it worked

Greetings from Germany,

Gorm