How many emblems do you need for a shiny pink chao egg or black egg?

It's not possible to get a shiny pink Chao egg or a black egg in Sonic Adventure 2. The color of a Chao egg is determined by the combination of emblems you collect in the game, but there's no specific combination for either pink or black.

Here's how Chao egg colors work in Sonic Adventure 2:

* Normal: Obtained with no emblems.

* Red: Obtained with 50 or more emblems.

* Blue: Obtained with 100 or more emblems.

* Yellow: Obtained with 150 or more emblems.

* Green: Obtained with 200 or more emblems.

* Purple: Obtained with 250 or more emblems.

* White: Obtained with 300 or more emblems.

While shiny Chao exist, their appearance is random and not related to the number of emblems you have.

So, while there's no specific emblem count for a pink or black Chao egg, you can get a variety of colorful eggs depending on your emblem collection.