I call it creative license. Right now I'm wondering whether to add solid borders to each OBW block. I think they look too similar without the borders, but the border fabrics I've tested make the blocks look drab. I'm being wishywashy about it, and can practically guarantee that whichever way I choose, I will wish I'd gone the other way. No worries, put that quilt together and give it to someone who will love it.