Originally Posted by
rakerlm
I would try a machine embroidery thread - the threads are strong and they generally have a lot of shine which makes them show up. They are great for quilting and you can get them in 5000 m cones
That's actually what I ended up doing! I have an embroidery machine so I have a stash of threads at hand. I had a 1000 m reel of variegated pale pink/white thread that I ended up using.
I decided against the stippling though so that means that I don't have to worry too much about seeing the thread. Next time I'll do stippling though!