Allow one player to keep their color when there is a color collision in ranked.#601

Right now, when two players have the same color in ranked, they both have to change color. Instead, randomly allow one player to keep their color and make the other change it. This is consistent with how it works in traditional melee & means players only have to be used to two colors.

The reason I didn’t want to award the color to someone is that if both players are really used to playing a color, and one is forced off, they might mistake themselves for the wrong fighter when the game starts.

If both are forced off, that error is less likely