Now you can proudly display this Phish logo on your wall. The print uses 4 colors, and while I did it in red, yellow, light green, and blue which were what I had access to, you can certainly experiment with it with a variety of colors to create any sort of gradient you want. I actually believe that it would probably benefit from pink and light blue as the lighter colors tend to blend better.
This is fan art and is not licensed by Phish, so please do not print these to sell them.
I created this model as an experiment in what I could do with color blending after learning about HueForge, although this was not created using HueForge. The method of creating this was pretty straight forward. Take a flat object and then rotate slightly changing filaments every so many layers. In this particular example I rotated the object 1 degree and changed colors every 5 layers. Of course, you could also try varying the number of layers based on how dark a color is where lighter colors get more layers and darker colors get fewer layers