Niantic confirms new Pokémon GO issue where Shiny Zacian appears with incorrect coloring, this issue has been resolved and any affected Zacian have been automatically updated to reflect the correct color

Niantic is continuing to announce new events and content for Pokémon GO. Read on below to learn more:

Shiny Zacian Appears with Incorrect Coloring

Last Updated: 5h

Issue Description: A visual issue affecting shiny Zacian is causing the shiny Pokémon to appear with the shiny animation but the standard color. Note that this is not impacting the shiny appearance rate or other shiny-related features (e.g. PokéDex, shiny icon, transfer warnings).

Issue Status: Resolved – any affected Zacian have been automatically updated to reflect the correct color.

Source: Official Pokémon GO site