I found some Nazli Gelin Garden thread at one of the LYS. Once I got home, I couldn't remember why I chose this neutral shade instead of one of the brighter ones, but I was able to pair it with some vintage black and brown buttons to good effect. It's manufactured in Turkey with Egyptian cotton and tats OK. The label calls it Size 1 Superfine, which may be some sort of yarn sizing. It looks similar to, or just a little larger than our size 10 cotton threads. I need to make some size samples, but I haven't done that yet. Zig-zag chains make for an interesting effect.
I'll have to go back for some of the other colors.