Here are 5 linked skintones for the barbie bodybuilder mesh with 2 pierced nipples and a pierced navel (many thanks to Marvine and Beosboxboy for permission to do this).
You will need the Ju_Beos_nipple-ring3 mesh from
here and the Ju_Beos_barbiebottom240705 mesh from
here for these to work properly in your game.
Credits:
Meshes - Marvine and Beosboxboy
Textures - Beosboxboy
Skin linking tutorial - Marvine
Feel free to re-distribute and re-colour as you like with the exception that they cannot be uploaded/posted on any paysite or the Maxis exchange and please credit Marvine, Beosboxboy and wirelessguy (in that order).