Some can put you into such a relaxed state that we will fall asleep. Colors are Symbolic Different cultures apply very different meanings to color. Here, we often use red to symbolize danger. In some places, red symbolizes prosperity and joy. In other cultures, white is symbolic of death and mourning.
Colors are often highly political and religious.
Here green is symbolic of nature, fertility, growth, and poison. In Moslem countries it is a holy color and its use should probably be avoided. The same holds true for orange and green in Northern Ireland. They are the colors used by its warring parties and would best be avoided. Keep titles the same size and color and in the same place from window to window.