Okay...I'm failing at Google today!
I went to my local sewing store this morning and they were out of most colours of Gütermann (R753) silk twist/buttonhole thread and won't have any in stock for another two weeks. I'm trying to find an online source but can only find the large spools in the standard black and cream colours.
The only site I found for other colours was myfabrics.co.uk, but their shipping costs are crazy expensive. Does anyone know of any US sites which offer the smaller spools?
https://www.myfabrics.co.uk/25-723878-697_guetermann-ornamental-button-hole-thread-r753-697.html