McDonalds famously uses yellow to get people to eat and leave in a hurry. Lavender and violet are universally calming in humans. I don’t have the links handy,

McDonalds famously uses yellow to get people to eat and leave in a hurry. Lavender and violet are universally calming in humans. I don’t have the links handy, but color psychology doesn’t vary much by individuals, it’s something somewhat hard wired.