Get a Lerp node(hold L and click on the canvas) and a Fresnel. Plug Fresnel into alpha of the Lerp and two of your colors into A and B and plug Lerp to Diffuse, then tweak fresnel values until you get the looks you want.
I'm coming from lots of Unity experience but relatively no shader experience especially with these networks or nodes. Jumping into Unreal 4 and the basic PBL setup (Diffuse, Roughness, Metallic) what can I do to try and push more realism? Also this may be a good opportunity for other people to learn as well? I know there…