My daughter had this weird poop color almost looked like it was closer to grayish green but mostly gray-looking. Is this normal?

She is 9 months old. First time having poop this color. She was her normal self all day, with the exception of this weird poop...

**EDIT 2: poop is back to normal color! I think it was either the Enfamil or the fruits she ate (she had bananas and doesn’t usually eat them)**

**edit 1: also to add, her father just told me he gave her two of those pre-made Enfamil Neuropro formula bottles when he watched her today. She usually has HIPP or Holle formula, so I’m not sure if that has anything to do with it.

She has been eating solids for about 3 months now, but we have been introducing new foods on and off like different fruits and veggies. Not sure if certain fruits or veggies cause poops this color??