It isn't easy being green

"It isn't easy being green."   Kermit, the frog

Why are some potato chips green? are some potato chips green?  

 This is how poisonous green crisps are - and why you still find them in your packet

Few people will happily eat the green crisp - but here's the amount you'd have to eat to get ill, and what causes them.

Why are some potato chips green? — Tasting Table