Looks cool! I can't get new Color Relationship nodes to work, though. The initial one works, but any new ones that I add don't use their input
this is great! I did find parts of the UI a little confusing though... Should the input colour update when I change source? And after saving a project, I am not sure how I can re-open it. Maybe it's just me but I didn't immediately realise that the nodes on the left were draggable (i see now that it is mentioned lower down). Maybe add "drag dots" to those? Really nice tool though!