Gahh that's all wrong! Twilight as GL is a cop out because she already has a GLRing though Rarity is of course correct but Spike is not the one with much anger in him... that's Flutterrage
My own list:
Red = Flutterrage
Orange = Rarity
Yellow = Pinkie Pie
Green = Rainbow Dash
Blue = Twilight
Indigo = Applejack
Violet = Spike