Since you ask! One of the things you may actually come across too...

When they curl up super tight they can give themselves some red marks too. My gal wedged herself between the wall and her hide and gave herself a nice little pinch. Gave me a good spook since I had to deal with septicemia on my oldest gal last year and it almost looked like a skin infection @_@;
A nice warm soak and some time stretching it all out and she was good as new~

They will get that pink or peachy tummy but as long as it's about the right time for a shed or you see the blued eyecaps, no worries~