Due to the Curse of Twilight, whenever poor Zippy gets very mad at some failure, everything looks happier as she screams and curses.

The skies brighten even at night (when the stars look more splendid), angels sing, birds join a heavenly chorus, and rainbows and fireworks burst out of nowhere. Flowers bloom, beasts prance, food and drink become delicious as she storms and smashes things up. Even worse, ponies start to feel happier and more relaxed as their stress goes into her black hole of a mind, erasing their suffering forever.

Twilight and the gods beautify Zipp's surroundings every time she screams in rage, to compensate for her destruction and mock her perfectionism.