I got Christianluv's skintone changer to be selectable by infants. It works a lot like the outfit changers only you can add as many skins as you want. In order to use this you must have at lease one EP. If you want to add skins to this you should download the cpackeditor from here:
http://www.modthesims.info/download.php?t=284572&c=1&ht=0&page=4&pp=25I made 6 different "skintones", each with 3 outfits and a nude, since the skintones don't come off when you bathe/change the baby diaper. The hair is Blooms baby hair, all i did was paste it onto the skins. The outfits are made by Theraven, again just pasted onto the skins. The base skintones are made by teru_k foud here:
http://www.modthesims.info/download.php?t=261288.

The pie menus are organized by skintone and hair color, and then split further by the outfits. The baby has to be selectable to change the outfit.

I recommend using this with snowstorms transparent diaper found here:
http://www.eclectic-sims.com/You can also use a diaper override mesh with this. I'm using the pj mesh found at eclectic sims.

**It can be found under misc/misc**
And the download link:
http://www.mediafire.com/?b1p9g8o2bg79799