These pictures are of a mech that I modeled, textured and then brought into a little scene that I created in UE4. The emissive textures look different in Unreal Engine because I changed their color with vertex colors. It gives a nicer effect. Overall technically you could change them to whatever color you want or even mask them for different effects.
See the model in 3d or VR on Sketchfab: (Use firefox for best compatibility.) https://sketchfab.com/models/af3971bdba314017b7920c25d86c40ed
