The way overlays work is that they replace the full face freckles slot option. You can then pair each of the 95 overlays with any of the 18 skin tones, resulting in 1710 possible combinations. You can still add freckles to your colorful Sim adults by selecting freckles from the lip mole detail slot, although this means you can't have both a lip mole and freckles while an overlay is in effect. Sadly, when it comes to kids, you will have to choose between overlays or freckles. Download the mod package at the bottom of Simsperience's page.
![Change Skin Color Sims 3 Change Skin Color Sims 3](http://thumbs.modthesims2.com/img/2/2/5/4/8/1/MTS_teru_k-1340980-EskinNATURAL.jpg)
![Change Skin Color Sims 3 Change Skin Color Sims 3](https://s-media-cache-ak0.pinimg.com/736x/fe/2a/11/fe2a11c87618d1be67f1304e750994cc--sims-cc-change-.jpg)
Dec 15, 2010 - I never tried changing their skin tone, just the gender. I do not know if this change is one that affects genetics, or if it's considered cosmetic.