Not the crisps. This book, apparently. This small 863 page book, used by most medical students, is unanimously named after a packet of crisps.
I don’t see it.
Cheese & onion flavour is blue.
Book is green, red, yellow.
The Cameroonian flag is green, red, yellow… In fact, according to my brilliant googling skills (important skill for a budding doctor), quite a few African countries favour this colour combination for their flags: Ethiopia, Mali, Guinea… For a full list please see Wikipedia.