I just finished hand quilting a dark purple border on a quilt. I used a Sewline fabric marker. It's like a mechanical pencil and can use various colors of "lead". It was in my stash of possibilities and, since I liked it, they probably don't make it any more. Label says to not iron over it but it can be brushed off or wiped off with water. Honestly, once quilted, I didn't think the marking was noticeable. I marked one side of the quilt at a time. I don't know how it would have behaved if I had marked the entire quilt.