Crystal fireworks

So 1.17 adds crystal. I think it would be super cool if you can craft the crystal with the fireworks to make a refraction effect so it's rainbow.maybe it slowly goes through all the color you add to the fireworks. Or maybe it will make the particles of the fireworks last a lot longer. Or the fireworks particles spiral around. I like this last one the most It just would be super cool for a new fireworks effect. Ty for reading. Can't wait for 1.17