>>49190858I never said that they were incompetent, I said that I was wondering if it was a simple mistake. Wurple has always had a spike on the back of it's head, so I don't think it's too crazy to think that someone colored it yellow, and then caught it later and fixed it.
That or like everyone else said, it may be an indicator as to which way it will evolve. Considering theres a lot of random missions like "Catch ____ amount of this pokemon", having an indicator of how it will evolve makes sense.