The white nail polish is a crackle so it breaks up. It doesn't have much staying power in the shell. But, it was a color I had on hand to differentiate the babies in order to track individuals.
Stoneman, I wish you the very best of good luck and see that you are doing everything you possibly can for them. It's difficult sometimes when there are differing opinions giving advice but everyone who has responded is helping as best they can. I just hope the actual condition can be confirmed so the correct treatment is given!