As of Minecraft version 1.21.5, there are three types of eggs; white eggs (which use the original minecraft:egg item ID), blue eggs (minecraft:blue_egg), and brown eggs (minecraft:brown_egg). Currently, only white eggs have their own crate (likely because they're the original egg) so it would be nice if blue and brown egg crates could be added to enable easy bulk storage of all three egg types

I absolutely love this idea, I'll let you know when I add this feature!