Blue: "You know what's wrong with Blue?" says Red to White. "They don't care. All those precious lives you seek to preserve, all those higher ideals you aspire to, blue is completely apathetic towards them."
Black: "You know what's wrong with Black?" says White to Red. "They don't care about how anyone feels, including themselves. Rather than doing what feels best they hurt themselves again and again, leading miserable lives because they think that just a little more power over others is going to make them feel happy. It's insane."
Red and White can both get behind a passionate dedication to a higher cause. They believe in something so strongly that they want to fight for it.
White: "You have gone astray in your fervor; your eagerness makes you impatient. The right way to achieve your ideals is through an ordered society." White rejects the words of its forefathers thusly: "Your faith in organized systems blinds you to how they violate the ideals on which they are founded!"
Red: "You have gone astray by becoming fascinated with the abstract. You want to know the key to being happy? Doing things that are fun, rather than putting it off because you worry that something wouldn't be 'fulfilling' enough." Red rejects the words of its forefathers thusly: "Real pleasure is the kind you earn, by working hard to do what your heart tells you is right. You can't imagine what it's like, because you've never tried it yourself."
Green: "If only you two could see," muses Green. "Your heart's in the right place and you'll fight so hard, but you have so little idea of how to achieve your goal. You fight the symptoms but have no conception of the underlying issues. You want to make the world a better place through destruction, to be a martyr for your cause even though you could do so much more for it if you took the time to ensure your own survival."
(As always, feedback is most definitely welcome.)