Describe the bug
The advancement spectrum:collect_amaranth is used to unlock recipes that use Amaranth Grains, and is triggered by having Amaranth Grains in your inventory while also having the spectrum:collect_vegetal advancement.

However, the advancement spectrum:milestones/reveal_amaranth, which is used to unshroud the Amaranth Grains item, can only be triggered by obtaining spectrum:solve_color_mixing_preservation_ruin.

This means that if you solve a color-mixing ruin with a friend, both players will unlock the recipes using Amaranth Grains as soon as they get some from the loot chest, but only the player who actually "solved" the ruin will be able to see what the Amaranth Grains actually are.

To Reproduce
Pick up some Amaranth Grains while having spectrum:collect_vegetal, and observe that this unlocks all the recipes that use Amaranth Grains but doesn't unshroud the item itself.

Expected behavior
I'd expect the advancement for collecting Amaranth Grains would also unshroud them, so you don't have to find a new color-mixing ruin to unshroud an item that you've already unlocked recipes for. Alternatively, go the other way and lock the Amaranth Grains recipes behind the spectrum:reveal_amaranth advancement, so you can't do anything with the shrouded grains until you properly unshroud them.

Minecraft version
1.20.1

Mod version
1.7.8

That is a tricky one, since the same argument can very well be made for each resource. But for now that will do.