mine is green because I'm taking iron pills for anemia

just talked to a nurse about this yesterday (for my daughter) she said green is actually and ok color they only are alarmed by black or grey stools.
green poo just means either you've been eating a lot of vegetables or green food dye, or what your eating is passing a little quicker so it doesn't have time to absorb (something) so its green! no worries:) I was worrying too about my daughter.

green isn't usually bad just reflects what you have been eating... might need more fiber and water.. but green usually isn't a concern