We use black bobbins for dark lettering or designs that are all dark. saves some time if a little bit of bobbin shows through.
I always use white, but Curtis I like your strategy of the dark bobbin thread. I plan to do this . I hate to deal with bobbin thread showing. ... JB
__________________ "Striving to help others, as I learn myself"www.coedsembroidery.comwww.coedstsaver.com "Heat Press Vinyl Remover" T-SAVERTurn Your Mistakes Into Makeovers
I probably use white bobbin thread 90% of the time, but I do use black and other colors as needed. I also use black bobbin thread for dark lettering or designs that are all dark to eliminate the white showing through. When I'm doing project that is visible from both sides, such as lace oranments or an applique/in-hoop project then I use the same color as the top but I use 60 wt thread in bobbin. It's easy to find almost any color in 60 wt thread, but 70 wt bobbin thread only seems to be readily available in white and black. Of course I wind my own bobbins using this 60 wt thread.
If you find a type of bobbin that works with your machine, stay with it. Every time I try to buy a cheaper bobbin, they never stitch right. I just stay with Coates now.
Check out bobbincentral.com, they sell black and white bobbins as well as many other colors. I recieved a sample of the magna-glide bobbins at a show and I love them. You can return the magnetic cores for a refund when you are done and I believe they pay the shipping. FYI their thread is really nice too, I have been loyal to madeira but these are just as good if not a little better.