Randomize Spline Material IDs | Splinedynamics
Set random material IDs for the selected splines, either using the existing IDs or specifying a range of IDs.
Installation:
1. Drag the script to a viewport. 2. Go to Customize > Customize user interface > Toolbars > Category: Spline Dynamics – free scripts. 3. Drag the script’s name to a toolbar.