I, too, didn't notice the dark green border. That being said, I would use the dark blue as the first inner border. However I would make it super skinny. Even skinnier than the light blue border. Than use the other borders in the order in which they are now presented. Since the dark green color is definitely used in the "windmills", I would bind the quilt with the dark green.
Be sure to post a completed picture with reference to this thread.