Do different colors of paint mean different things?

Answer 1

Color is frequently used to aid in the identification of things. It would probably come under the heading of color coding. Do fire extinguishers come in something other than red? Industrial plants color code pipes and valve hand wheels as part of their game plan to make things easier to understand. In cases like that, the color codes are probably going to have meanings specific to that setting and won't be carried outside the operation. The meaning of the color would be location specific. Consider that color is used in a universal way when it is applied to the identification of hazardous materials. The placards on trucks and rail cars are designed to have universal significance, and a color can immediately give a first responder a leg up in understanding the nature of a threat. The use of color in interior design most likely wouldn't fall under the heading of color coding, though.