DC comics galactic lantern corps
Violet/Pink=Love (unrequited, scorned or realized)
Lets attribute anime characters a ring accordingly. I'll go first.
Red= Son Gohan (especially if the Cell saga and prior sagas are considered)
Orange= Possibly Monkey D Luffy as a heroic example.
Yellow= Different villains or heroes use intimidation. Mostly villains.
Blue= Son Goku
Violet= Boa Hancock