hello my son is 3mnths old if feet not covered it turns into blusih purple onced warmed up it be fine his hands and feet be cold is it sumthng to worry?

A. Child is feeling cold and that is why the feet is turning like this as you yourself mention later the question that when you warm it or you give proper wants to defeated become better would be good to protect feed by making your child wear or you can use your body suit when you put your child to sleep in the night because socks are not suitable while sleeping