Green is the color of life, continuation, growth, nature, health, and sustainability. It is the most balanced of colors as it acts as the bridge between soothing cold colors and tempting warm ones. It offers a large variety of tones and it thus very versatile. In Western Culture it is viewed as the embodiment of money and financial safety. For this reason, it is often used by banks to psychologically build trust in the minds of their consumers. One of Hippocrates four humors was calm (phlegm).