Yellow might be less common, but many fast food chains have red in their logo, and it's not entirely clear whether this goes beyond the fact that this particular color is eye-catching.

The students were then asked to read out a 320-word description of Toronto and those who had subconsciously seen the fast food logos were faster. Even though they had no time limit, ...

Pepsi's at it again. trying to crack Coca-Cola's monopoly at certain fastfood chains. In its latest salvo, it sent out fleets of undercover cops – and cups – to smuggle Pepsi into restaurants ...