I think it is classic and beautiful.
Is the a couples gift or one for your sister?
If this boyfriend one that will be around for the long term, you could have a skeleton fabric as backing, quilt it with skeletons, or put a skeleton on the label.
Or forget the skeletons all together! What if they broke up and she see his skeletons all over your beautiful quilt? LOL
Keep going with your beautiful project. 8-)