Yes, I experenced these happening to my wild chalices as well. They will go white on me.I do have 2 wild colonies (large pieces) that just bleached out, hasnt receded yet but i can see right through the tissue... not sure what is going on with those...
I I would do is, get them 3-4 inch lower and hope it will come back.
In several cases, the colour will come back after several month, so don't throw it away.
It would sometime morph into beauty. so keep ypur hopes up!:xd:
