Is this mold on my nephew’s onesie?

It can happen, I had this light pink hoodie that I wear around the house. It’s ancient but super comfy and soft. I also cook in it pretty often so it has been splashed many, many times. Was in a hurry one day so I threw it in the washer with a new pair of jeans. EVERY old invisible stain ended up being blue, while the rest of it barely absorbed any color. I have no clue why. I still wear it 😎

that’s my sister man!! my arms are long but damn!!