What do you think of having the connection thread, from an output to an input between nodes, adopting the colour of the output node?

Would you still see it if you zoom out from the network? I think the coloring of the nodes makes it clear in what section of the network you are, the lines would add little to it IMHO.

I would think it would be one of those things where it would be good in most circumstances because people could develop conventions as to node-wire colors and it would make networks easier to read.

There might be an occasional situation where you look at a network and go “why”