Why is my omelette Green?

Related questions

1. What is a good omelet pan?
2. Why is it called omelette?
3. Can you eat runny omelette?
4. Can you undercook eggs?
5. Is it OK to eat omelette at night?
6. Why do eggs turn green?
7. What is a crustless quiche called?
8. How do you tell if scrambled eggs are undercooked?
9. Why is it called a French omelette?
10. Why did my omelette turned GREY?

Tags

1. #green
2. #around
3. #temperature
4. #between
5. #yolks
6. #cooked
7. #similar
8. #occurs
9. #boiled
10. #discoloration
11. #whites
12. #harmless
13. #result
14. #forms
15. #sulfur
16. #reaction
17. #sometimes