I've made several blue/yellow quilts. They turn out beautifully. I think white might work better than cream...I think it would have better contrast with the yellow specifically. I do love the idea of using as wide a selection of blue/yellow as you can gather. It will be a beautiful quilt! I have also prefer to ask if people want a quilt or something off their registry. Don't want to go to trouble/work/expense of a beautiful quilt if they won't appreciate it. If you'll PM your address, I'll check my fabrics and see what I can add.