A character with only crystal magic is able to charge a crystal that has been channeled to a color of magic without knowing that color of magic. As Taronja, I had a yellow fragment and a gray shard, and I am able to charge them without any color magic skills. (crystal magic 5 currently)

I don't know if that's a bug or just that charging is meant to be a crystal magic skill feature, but it seems somewhat like a bug, so I put it here.

If this is working as intended, a critter could channel a prismatic into a color of magic, then hand it off to someone who is a master of crystal magic, and they could take it beyond the originator's ability to charge it.