Red and Yellow = Danger or Fast Food

I'll have a danger burger and hazard fries. To glow, please.

Why do we use red and yellow to alert us to fast food and danger? Red/yellow says, "The food's good here and pretty cheap, too," and, out of the other side of its signifying mouth cries, "Watch out! Trouble ahead!"

Read the rest of the Design Forum article here.

[HT: Newsvine ]