We should all be aware that economies, globally, nationally, and locally, are not what we would want them to be. Keep yourself aware. There may be no specific threat to you, but you should at least keep your eyes open and be on the lookout for issues. A lost job, a sudden medical emergency or a family member who has lost everything showing up at your door looking for help; how would these affect your day to day life?
Yellow - Relaxed alertness. No specific threat situation. Your mindset is that "today could be the day I may have to defend myself." There is no specific threat but you are aware that the world is an unfriendly place and that you are prepared to do something if necessary. You use your eyes and ears, and your carriage says "I am alert." You don't have to be armed in this state but if you are armed you must be in yellow. When confronted by something nasty your reaction will probably be, "I thought this might happen some day." You can live in this state indefinitely.