Help with creating a texture from a mesh

Hey everyone, I’ve made several attempts on this and would appreciate your help. What I’d like to do is use a coloured mesh to create a texture so I can create a material from it and use it in a render software, however, I’d like to be able to add curves to said texture, more specifically a voronoi pattern.

This is the preview coloured mesh from GH:

And this is the voronoi pattern

Does anyone have any idea how to accomplish this?

I have done that. It could help you