The different colored horn on the unicorn was bothering me, but then I just realized, it might not be the norm for all the unicorns. It's possible it's a prosthetic horn or something, so she's one of the only ones with a horn like that.
@Background Pony #6ABD That makes sense. Pipp's wings are different and the 4chan leak implies her wings aren't normal, plus the leaked cover appears to say "everyone" or "everypony" for the big word that's partially obscured while the rest says "can make a difference", so inclusivity sounds like the name of the game here. Maybe.