I studied the color arrangements of brain scans of happy people and discovered that they seemed to be characterized by, well, happier colors, while depressed people's brain scans had darker colors in them. I used these colors as the basis for abstract paintings that tended to capture and correspond to these emotional states.
So for example, this one below is called, "Happiness #1" and when you are in the presence of this huge glossy canvas, you can't help but smile and enter a state of happiness...
The following tryptich is based upon the color schemes of depressed patients and definitely has a more moody feel to it. "Melancholia 1-3" is featured below:
