I am putting this quilt together. It is one of those jelly roll quilts, but scrappy. Each piece used, has flowers that I love, but some are kind of folksy and others are really nice like paintings of the flowers. So anyway this quilt top has a lot of light colors. I am putting on a dark green border and a dark green back. So what color do I use to machine quilt it? I guess the dark green, but does it work to use dark green bobbin and white top thread?