In my project box for my second version of Grand Illusion mystery quilt, I couldn't find the inner border or the fabric that it was supposed to be. So it could be anything I wanted. It was supposed to be the turquoise in the 4 patch. I tried yellow, blue, white, navy, green in different variations. But, I liked turquoise the best, and I had a different fabric that is a pretty good match.
I like the way it frames the quilt and helps tone down a pretty busy quilt. I like the quilt better the farther I am away from it. haha