Color is one of the many tools we use to define the world around us. We often use color to describe our mood or setting. We use color to warn, excite, entice, scare, and advertise. We also subconsciously use color to define periods of time.
Color is perceived the same universally but has slight cultural differences in interpretation. Regardless of culture, it has a strong emotional impact on the human brain. There are certain colors in nature that universally signal danger, as found in the brightly colored and venomous Eastern Coral Snake and in poisonous Holly Berries.