@spikeyxxx that’s cool solution and I managed to try it but it uses only one material and I need to set different, plus on curves object it does a gradient on each spline because I can’t do Attribute Instancer

@dillenbata3 I’m not really fluent with just text steps to do what you suggested without seeing it, yet. I figured your approach is something like this where I’d paint it and black would be blue and white would be red material, not just color, but I don’t know how to set it up.

I’m looking to then convert the curves to mesh and I want some splines to have one or another material for further use.