Well, for the obvious fact that blue and green aren't actual human colors. No one is going to give two shits about someone shouting blue or green power, especially if they're wearing a blue or green super hero suit.
As for the red power and white power thing, it's obvious it's because of the color of the suits, just as the others are, regardless of whether they're not actual human skin tones. You bringing it up is probably the most racist (or at the very least, bigoted) thing anyone could do.
The phrase "white power" is obviously going to trigger more people than any other color, because of the history of that phrase. It was used a lot among the racist KKK group and others as a show of their supposed dominance over every other race. But guess what? There is less than 1% of people in this country with a white skin tone that would say ignorance shit like this, so it really isn't an issue in most areas in this country (the US). People like you who continuously bring it up are only trying to spread disgusting "race wars."
