When you secrete poison, then you can decide what color to associate that with. For now: Barbie pink.
It was first discovered in 2007, and scientists quickly learned that the shocking pink dragon millipede, while looking like a half-chewed piece of Laffy Taffy, was anything but sweet and tasty. It does have a pleasant, almond-like smell to it, but that's just because it has a series of defensive glands that ironically spew almond-scented cyanide. You might remember cyanide as one of the deadliest poisons on Earth, and one of the last things you should ever let near your skin.
In entomology, much like in dealing with passengers on a city bus, spiky pink hair pretty much means "Keep your distance."
This is a creature so potent and dangerous that, although it does have a Latin name (Desmoxytes purpurosea), even the man who discovered it uses the casual name. As Henrik Enghoff explained, "We think that such an unusually colored, conspicuous millipede deserves more than a Latin name and suggest calling it 'the shocking pink dragon millipede.'" Man, even Tyrannosaurus rex couldn't swing "giant roaring sharp-toothed death lizard." That's some serious science street cred right there.