Ivan - 2022-06-12

Hello,

I was wondering if there was a way to assign a rainbow color to protein ribbons in MOLMOL? I want to color the N terminus blue and the C terminus red, and then have a smooth color gradient between the two residues. As an example, here is a Wikipedia page with such a figure:
https://en.wikipedia.org/wiki/Coiled_coil

I have tried looking at the manual for various coloring commands for primitives. I also tried looking at the standard macros but had no luck. Thank you in advance.