What do Blue Egg Raids mean in Pokemon GO?

Pokemon GO trainers aren't sure what to make of the blue eggs popping up in-game. Pokemon GO has a series of in-game markers for different events. From Raid dif

Raids - Pokemon GO Guide - IGN

Raids - Pokemon GO Guide - IGN

Shine Bright with the Season of Light in Pokémon GO

Pokémon Go Raid Hour date and time, plus how Raids work, including Raid Rewards and Raid level requirement

Regidrago Raid Hour Is Tonight In Pokémon GO: Hidden Gems

Pokemon Go Raid Boss & Egg List (2020) - GameWith

Pokémon Go raid, Raid Passes, and raid counter guide - Polygon

What are blue Raid Eggs in Pokemon GO?

Raid Battle, Pokémon GO Wiki

GO Hub Guide to Raid Battles

Does anyone know why some of my eggs have blue text? : r/TheSilphRoad

Pokemon Go Shadow Raids explained: How they work & current lineup - Dexerto

Amazing! New Special raid egg in pokemon go.

The 4 star raid egg on the Dieno Community day web page shows a different egg then normal. Is this a bug or a new egg? : r/TheSilphRoad

Pokémon Go: Zapdos raid guide