For what it is worth, I design quilts professional and face this decision every day. I will say a definate no to the orange bat fabric because the focus is those precious jack-o-lanterns and they almost disappear with that fabric as a border. The purple is nice. It's a little busy, but Halloween is busy. If you want classy, you would go with a combination of borders chosen from the fabrics in blocks. But fun, the purple and I agree with the quilter who said an inner border would allow the lanterns to have the attention they deserve.