Colouring is the easy part, Jotisz, but... Look at the parts where the arms and torso connects. One can easily see the seam, the texture isn't continuous in that part, because i sculpted the arms and torso separately. I'm not very satisfied with this.
Also, i disregarded the ass, it will be covered by pants, i guess.
I'm very interested to see how the render look in-game, because Blender's illumination i set is too intense. The muscle reliefs could probably need more contrast.
This is the texture with the colour tone i used, btw.