It turns out I am having a girl and so I switched it up to this:
I added a pink sheet to the baby bedding. I took the blue out of the play mat and replaced it with more pink. I was tempted to add more green because Ross has a brown and green set now... but decided to just use what I have.
I added a pink tissue paper pom-pom. ...and if you look closely at the tree art I added a few pink apples to it. (Eventually baby's name will be above her crib.)
I added a couple of storage boxes to the shelf. I took the yellow off the ABC's & 123's art and replaced it with some pink.
Now all it needs to be complete is a beautiful little girl. :)