Buttonhole twist

Gütermann R753, NAYY. I haven't tried it yet. It's not the only kind, but it's what's here. I didn't know the 30m spools existed; evidently they do but they may not come in as many colors. The others are 10m.

The color numbers do seem to correspond to the polyester color chart. They'll look different at least in sheen due to the different materials; I haven't actually compared any of these yet. Still, as this thread might only be available by mail/online order to most people, knowing you can at least settle for the same color numbers as for the polyester thread, and get reasonably close, might be a major help.

I have seen these in the usual "tailoring" colors and a few pastels; any sort of purple seems to be absent.