How to color node wires in node editor?

Is there any way to color wires in node editor? If not, are there any add-ons for coloring wires based on the body color of the output node? It seems like it should be pretty simple to do and I've downloaded textures with colored wires but I have no idea how it was done.

• What do you mean by "color node wires"? Can you show a screenshot? Do you mean interface of nodes in the Node Editor? – Mr Zak Jan 17 '18 at 15:43

If you are trying to achieve an effect similar to the one you get with the Blender internal renderer, you can use the Wireframe node to separate edges from the rest: