Color Tunnel Generator

Small changes in algorithms produce wildly different results. To visualize this, we can play with the rainbow color function and apply it to an arraList of colorful disks, all stacked up. When we change the colors of the disks with both the index and the time passing as an input, we get a a wide variety of cyclical or non-cyclical color tunnels. They sure are bizarre to stare at, and, depending on the specific settings of the factors, they can take us to good places, to dark places, or from one to the other.

Code is here, please tweak and see what resonates with you most. Of course, we can also layer various versions onto each other, and then we get this kind of effect: