I sometimes use paper tear away stabilizer. I buy pre-wounded bobbins in black and white. I try to use white when using lite colors and black for dark colors. On the other hand, if I use Ricky Tims stable Stuff stabilizer, nothing shows up. This is cut away stabilizer and can be left on. When it is wet it feels like polyesther. I have done projects embroidering on silk and I then fill my own bobbins with the same color as the top.