Well metal becomes red hot, and ice is often blueish in nature. But it is something we humans do, particularly with signaling devices (which a chart is a form

Well metal becomes red hot, and ice is often blueish in nature. But it is something we humans do, particularly with signaling devices (which a chart is a form of too, arguably) you will see color used in similar fashions to convey a similar meaning. Red is internationally a STOP color, a danger, warning color, and used as such most everywhere; except the Japanese stock market apparently. Which is fine, just curious to me. Another comment here said that in the US some traders flip their colors to indicate red=sell, green=buy, which makes more sense to me in terms of Japan.