Thanks for your replies. The kittens are doing very well, except...Well the mother seems really mean to them. She takes care of them, keeps them clean, fed and in good health, but she bites them very often. Ive never had a cat before Skittles so i dont know if this is natural or not. The babies arent hurt by the biting, it seems like maybe discipline. They do cry quite loudly.
The white one IS looking more and more like a siamese, the brownish grey around the feet and tail, but she is so sweet. My personal experience with siamese is that they are very moody...Maybe that was just that one tho.
Ive tried introducing soft food, and they arent interested. And ive tried puting them in the litter box as well, which they arent interested in either.