A quiet monster dude

The collor full parts changes to different combinations of color depending on moods:
Dark Red: Aroused
Red: Angry
Orange: Impatient
Yellow: Worried
Lime: Confident/Zesty
Green: Disgusted
Sky: Happy
Blue: Sad
Dark Blue: Depressed
Light Purp: Bored
Purple: Tired
Pink: Exited
More colors may come since we know so little about him.