Yes this if your question is regarding the quilting. do use the same color thread on the top as the bottom. By using white on thread for quilting, both top and bottom, and using orange fabric, tone on tone, on the back, you will see a secondary pattern on the back. It will look like a whole cloth quilt.
Originally Posted by
Tartan
I would wash the backing to make sure it is color fast. If it is, I would go with orange on the back but quilt it with white thread on top and in the bottom bobbin. The white on the orange would make it reversible if you wanted as the quilting design would show up well. Beautiful top!