This is Unreal.

So i've recently subscribed to the Unreal 4 engine and have been playing around with it. So far i'm finding the engine stunning but a tad overwhelming

I literally just threw the texture same texture map into each channel. Base Colour, Specular, Metalness and Roughness, hence why this looks kind of shoddy...

Making the colour mask shader was very simple:

I multiplied the body colour mask in the diffuse texture's Alpha channel by a a constant 3 vector which represents an RGB colour value.

This was then multiplied by the rgb channels of the diffuse map and plugged into the Base Colour.