Foremilk can be drunk by a child but of lesser calories and nutrients.

If I understand the question correctly...No, foremilk is not colostrum. It is milk with less fat. Colostrum only lasts 2-4 days then it is milk.

Pre-ejaculate.

There are actually 3 types

Colostrum

Foremilk

and Hindmilk.

Colostrum is the milk a baby recieves in the first 3-7 days after birth, and is rich in antibodies.

Foremilk is high in vitamins and antibodies and is a thin milk, while hind milk, the milk a baby recieves at the end of a feed is fuller, and contains body building components to encourage growth

The colour can vary. At birth, the baby will pass meconium which is very dark in colour, but as the mother's milk comes in the stool will get lighter and eventually be yellow. If it is green there may be a foremilk/hindmilk imbalance, or the baby may have a virus.