Congratulations on your little "package". As an old maternity nurse I still remember the goose bumps at the sight of every birth. It's a wonderful thing to be able to assist a couple at this very intimate and momentous event. But I wax sentimental...
I once attended a developmental class and they told us that newborns vision is clear very close...like the distance between baby and mom faces when breastfeeding. Not so clear beyond that. And they attend to high contrast. In newborn intesive care units you will often see the nurses put black and white patterned visual stimuli in the isolettes. They said red/white/black is a great combo for baby to look at. Actually, pastel quilts are probably more parent-approved than baby-approved. I have made several red/white/black baby quilts and they have been well-received. I think black and white with any one strong bright color (lime green, royal blue, lemon yellow) would be visually stimulating for baby.
Good luck!
Penny