Okay, I am going against the popular opinion. If you use the gray from the quilt,your triangles will bleed into the border. I would use a narrow border of a dark version of any color from the quilt - like a very dark gray, even black, deep burgundy, or deep green. Then a wide border of your favorite burgundy print. I like the one with the squiggles. I would use a mottled black for the narrow border.