Welcome to YorkieTalk and congratulations on your 1st litter
A few members of the forum have had "blue born" puppies in their litters, here is a recent thread, do your puppies look like this?
Pictures of blue born
http://img22.echo.cx/img22/9935/cach...inza0011vf.jpg
Here is the thread I found it on
http://www.yorkietalk.com/forums/sho...e+born+puppies