The instructions say: “Press the K and L strips in half lengthwise wrong sides together to make four basting strips. Align the strips with the edges of the quilt. Baste strips in place.
Prepare binding and stitch to quilt front edges, matching raw edges, mitering corners and overlapping ends. Fold binding to back side and stitch in place to finish.”
The color of the basting strips are a definite border type of thing that goes around the quilt, right before the binding.
If this is just another very small decorative thing…OK. But I don’t get calling them “basting strips.” It makes me wonder if there's a structural reason for them but I can't see what it would be.