a nice thing about invisibles is that they don't show and you don't need to match them exactly
I got some velveteen for a skirt and thought an invisible zipper would be a better choice. But then realized that my new Janome didn't come with the proper foot and I need a Janome foot - of course. I could wait until I get one, or I could put it in by hand. So far I've ripped it out twice.
Surely I'll get it in there and it will be a simple matter. Right?