Gray baby poop is not usually normal and it should be addressed immediately. This is also the case for chalky white baby poop. Sometimes, gray baby poop color can mean the liver is not functioning properly...
A normal color to see in babies that have just started eating solid foods or are taking iron supplements. Green baby poop can also occur when baby has eaten more than usual or is eating more green foods.
Red baby poop can be serious because it can mean that there is blood in your baby's stool. However, this is not always the case. Sometimes flecks of red in your baby's poop can be something your little one ate or drank.