Thank you, Faith.
Currently I believe that Mari's runny poop is caused by stress, since it's getting more solid, and now that she's eating more, the right color.
I don't believe she's seen a fresh food yet, (she's only 2 months old, and just left the nest), so I know it's not that.
If things continue, I plan on taking her to the vet to make sure, but she seems better by the day.