I tried to match a black fabric on a quilt I made. It was rough and I finally ended up making lots of changes in order to match everything. It was a headache trying to match the fabric and then a headache trying to fudge so that it did not look obvious that it was not a match. The next time, I purchased more than I needed but never again made the mistake of using my left over fabric anywhere that needed more than I had. Lesson learned.