Hmmmm, I had to give this some thought.

True Happiness: the color of a tequila sunrise, light orange on bottom fading into an orangish-red on top
Contentment: soft purple
Calm: deep rose pink
Manic: like if a rainbow was to explode out at you
Anxious: yellow & green swirling together
Sad: Blue
Depressed: dark blue
In my Dark Place: pitch black
Angry: fire red