Why does the chicken meat & bones turned red when cold after cooking?

Question

When the bones got cold they turned a red/pink color as did some of the meat still attached. Why did it do this?

Answer 1

Oxygen & iron reactions to heat.

Answer 2

because it is not cooked right because if it was cooked right there would be no pink spots because when the food is hot i will look ready but when it gets cold there will be pink