I've sewn for years and have a large collection of colors. When I am quilting, I typically use a neutral color as it blends well with most. I'm fixing to start a black, red and white quilt and will probably use black for most of it. One thing I try to keep in mind when I am getting ready to piece a project (especially when I am machine quilting) is to have several bobbins already wound. If I'm using my Singer it can't wind a bobbin indepedent of the sewing functions and it is really frustrating to have to unthread the machine to wind a bobbin. :|