So after testing the pierced silver piece against dozens of background fabric samples, i went with a shimmery, deep/bright red fabric.I had originally intended to 'sew' this piece of red fabric sandwiched between the decorative front and a solid silver back piece with coloured, enameled wire. However, the fine wire could not take the strain of going through all the holes,and kept snaping before it reached the end, no matter how careful and delicate i was about threading i,.so i ended up using embroidery silk.