Unity 5 has a PBR system. How it works? You give it the object's physical properties (how metallic and smooth it is) and it gives you an in-game version of that thing in real world. So if that part is shiny irl, it should be shiny in KSP, and doing it in Unity 5 is easy as pie.
Going to minmus with a 3 staged rocket, just to see it has excess delta-v. I had minmus orbit and 1000 delta-v remaining with only the first stage, that supposed to just get me to LKO. And i don't really don't like to ditch 4000 delta-v of the second stage:(