Is this normal poop??? UPDATE..WTH

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Hello all, my daughter is 4 months old 19 weeks oh, she started oatmeal cereal on Sunday and she only eats like a couple baby spoons of it. At first her poop was maybe a little runny . But she just pooped and now it looks like clay light gray and dark green clay. She is formula fed. Just seeing if this is normal when starting a solid.