I saw the title, and before even reading your post, I said to myself, "NO WAY!" Congrats again!
It's a bit unusual for them to be blue just before delivery, but not unheard of. Three questions:
Did they eat right up till delivery?
Are they colored the same as the others?
When was their last shed prior to delivery?
Well... fire up that camera, Marian. Admiring fans want to see

.
Rick