Making new topic as I am happy and proud with the results.
Dragon eye, easy node setup for adjusting color variations.
As always constructive criticsm welcome 
Clean eye:
With some bump and roughnes variations:
Node setup:
Fairly simple, using mostly gradient as mask and playing around with mix nodes, please note if you want to use same node setup, depending on colors(mostly value and saturation), you willl need to play around with multiply/darken/lighten thingies. Multiply math node used to sharpen the gradien(or other) mask, can use any kind of value and/or math nodes.
P.S. Only need to sculpt base mesh, like so:
Please do tell me if I can improve something with it. The details are a little bit rough from upclose and I was unable to receive much cleaner results.
Cheers!