Yellow is the brightest and most joyful color in the spectrum — associated with the life-giving power of the sun, but equally with poison, betrayal, and cowardice. An ambivalent color in every sense.

Green is a calming, vital, and refreshing color. It is closely associated with nature, life, youth, hope, and freedom — but also, quite paradoxically, with poison, envy, and decay.

Red is an active, self-assured color — directly associated with strength, energy, passion, and, just as strongly, with danger.