Violet.

The night is v i o l e t.The sky shouldn't be so pretty. Not tonight, of all nights. But then, it's appropriate. Violet is, after all, red and blue. They were blue for a while, before gravitating to indigo. Tonight, everything is blood-red. Everything except the violet sky. They fight in the violet night, and he's just relieved that they aren't blue anymore. They've long ago left red and orange, and yellow could only last for so long. Green is still washed throughout their home, but it has no place in this night. Even blue couldn't last forever, and the in-between of indigo was always transitory.

They die violet.