How to gradually change texture color with three.js?

Question

JavaScript

Guys, I want to set the base color, and then smoothly repaint the stl model in a different color. Something like a progress bar.
Now I change the color of the entire texture somehow like this:

mesh = new THREE.Mesh(geo, material);
mesh.material.color.set(parseInt(mesh_color.substr(1), 16));

So that you understand what I want, I drew a little

Answer 1

jsfiddle.net/FtML5/3 - via