Nice. So you’ll replace those strands with 2815s.
The “map” for those should be pretty easy. PB uses a map for 2D (and 3D), so doing a single rainbow across the entire thing, or making things move back and forth, etc is much easier.
Every pixel ends up with a coordinate between 0 and 1 in each axis. (Since this has sides, you may or may not want to do 3D, but I’d say 2D is probably plenty, just imagine it curving around the sides.)
We have some fun 2D sound patterns already, mostly for use in a panel, but that’s the nice thing about the PB: once you enter a map, it doesn’t matter, it’ll just “work”. So your highlighted edges would become reactive to the sound, as if they were the only parts of the matrix panel you could see. This works well. I had an example but the original video/post has been deleted
But you can see a screenshot still: