Have you encountered a pink egg? It seems to be unusual occurrence, as eggs are predominantly white or brown. It has been observed that pink eggs can indeed exist. There are several potential explanations for this https://docs.google.com/spreadsheets/d/1qL-aIM5KxaBFeWx9uqNsFK4KthW88k7ORDu_7a02O8s/edit?usp=sharing