Another great mood-boosting color is green. Green is the color of fresh food and money, and people usually relate it to the meaning of life and wealth. Bring the feeling of abundance and life into your house by adding green to at least one of the rooms. Whether a bright or soft shade of green, it’s up to you, but I suggest making it blend with the rest of your house through natural shades. If you don’t want to paint your walls, why not buy a green sofa?