Like notaries, witnesses aren't generally required in order for a contract to be legally enforceable. However, each state may require special kinds of contracts (e.g., real estate deals, wills, and marriage agreements) to be witnessed by a third party in order to be binding.
McDonald's, apparently, use red and yellow because red=fast and yellow=hunger (hence fast food!). Remember also that meaning is what we create. It does not exist in the color itself and individual meanings may or may not exist in different cultures and individuals.
Nature and Culture: Yellow is sunshine. It is a warm color that, like red, has conflicting symbolism. On the one hand it denotes happiness and joy but on the other hand yellow is the color of cowardice and deceit.Yellow is one of the energetic, warm colors.Because of the high visibility of bright yellow, it is often used for hazard signs and some emergency vehicles. Yellow is cheerful.n the one hand it denotes happiness and joy but on the other hand yellow is the color of cowardice and deceit. Yellow is one of the energetic, warm colors. Because of the high visibility of bright yellow, it is often used for hazard signs and some emergency vehicles. Yellow is cheerful.