Sorry, I have no pictures, but I like using monofilament thread for feathers. Some quilters have trouble using it in their machines, but so long as you're confident about using it, then go ahead. The times I used it I didn't really worry about shininess, just that it did the job.
I've also used Superior Thread's Bottom Line, which is a thin polyester thread. And some day I'd like to try silk thread. However, since I'm a very dedicated hand quilter, a silk thread project will have to wait until I'm retired.
Janet