Obitsu 1/6 head color difference? Old & New style question

[~TurkishDelight~]

I want to get a W-03 head for my 1/6 old style Slim male Obitsu body. I want to know if there is a skin color difference with the old and new style Obitsu heads (natural, not white). Are there even old and new style heads (color difference)? Or are they all the same color? I just want to know if I need to find an "old" style Obitsu W-03 head for my old style Obitsu Slim male body so the color will match. I hope that's not too confusing.
I guess I want to know, were there "old" style natural skin tone heads that match the "old" style natural skin tone bodies?