Kashmire's tummy turns pink like that and in about 3-5 days I'll notice him starting to turn blue. He stays in blue for about 3 days, then will go back to clear and 2 days later, like clockwork, he sheds!
When I see the pink belly, that's when I start bumping up the humidity until he shed.
I was going to comment on your pictures thread that you can tell how much you love your little Ms. Karma!