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.
FAST Program Description. Families and Schools Together, Inc. (FAST) is a multifamily group intervention designed to build protective factors for children (4 to 12 years old) and empower parents to be the primary prevention agents for their own children. Lynn McDonald initiated a school and community program in 1988 called Families and Schools Together (FAST).