They may seem pretty harmless, but those little blue dots on motorcycle taillights could get you in trouble with law ...

The blue dot phenomenon actually dates back to the 1950s, when it first appeared on hot rods and custom cars as a way to stand out. Now, decades later, they're making a return on some custom ...

One trend straight from that last category is those little blue dots some people put in the middle of their taillights. Some may think they look cool, but they could also get you pulled over.