I think the Orange or the Peachy, to me it looks orange. Is it more orange or peach? just curious? It think it it quite pretty!
Anyways, I think it would really make your quilt pop. I also would suggest maybe doing a search on here and checking out the different backgrounds choice that were used, depending on which way you choose, to me would depend on which way you choose to make the background. Hope that made since.
Beautiful fabrics!