For this chain-of-thought reasoning and answer, what was the question?
Zombies are often depicted as green in pallor. Nickel in jewelry often turns skin a greenish color.
 A: yes

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Q: If your skin was turning the color of a zombie, could it be because of nickel?