If the back is solid black, ever think of doing some kind of FMQ design on the front with gold in the bobbin and on the back..thus seeing an outline/drawing of whatever in gold thread on the black back? LIke if you are just STID your blocks, then that outline would appear on the back in gold..kind of like the "negative" of FMQ design. Granted if you are meandering FMQ I wouldn't think that would look so great but just SITD the design of the blocks might look pretty cool. Extra design without any additional work!