Why is the McDonald's logo red in the USA and green in parts of Europe?

McDonald's logo gets green background in Europe

Let's Run it Back! The McDonald's All American Games Will Return to Houston this April

McDonald's rolling out green logo in Europe

McDonald's: The mind-blowing reason why its logo is red and yellow revealed

McDonald's no longer uses 'pink slime,' despite rumors

McDonald's Logo Mania

Mc Donald's Rolled out Green Logo in Europe

Italy watchdog ends investigation into McDonald's franchising terms

Easy Eco Tips - Is your local McDonalds' logo green or

Expert explains 'secret' reason why McDonald's logo is red and yellow - Daily Record

Mind-Blowing Facts About McDonald's

Do McDonald's signs look different in other countries? If so, why? - Quora