Will thread fade along with the fabric?
I’m making another pair of jeans. I thought I would try a reverse applique sort of a look on the pockets. I did this once before and it looked cool until I washed them and then the raw edges ended up looking all fluffy like a denim rag quilt (not the look I wanted). I attached a picture of the jeans before I washed them and I really liked the look. So I thought this time instead of putting a line of very short straight stitches to reinforce along the edge of the design, I would do a zig zag stitch in the same color of the denim so I can get a raw look with just tiny eyelash sized fraying and the design would stay reasonably crisp to the eye. My question is will the thread fray along with the denim or will it stay dark blue while the jeans fade, causing the zig zag to slowly become undesirably visible? If it does fade, is invisible thread a good alternative? I’ve never used it.