That's ok. The child will outgrow a baby quilt. Let the nursery match. Time is on your side. Wait until your grandchild is about 4 or 5 and take him or her to the quilt store to pick out the fabric and make a quilt from that.
We used to take my grandson to the quilt stores ever since he was an infant. When he got a bit bigger we'd let him pick out some fat quarters (which he instantly turned into blankets for his stuffed animals). He had the best taste in prints I had ever seen. Anyway, one day I told him to pick out 3 fabrics and I'd make him a quilt. That quilt meant more to him than anything else because "I picked out the fabric and grandma made it for me".