http://ropedesigner.custombraid.net
online colours and pattern generator for custom cord covers
i think that’s mm on the ‘size’ column,
i mostly use smaller cord,
but this might be of interest to some
Cool! Here’s a couple for paracord
Paracord Planet
Atwood Rope
I’ve been mulling the idea of contacting someone (I would need to start with researching who best!) at Aliexpress/Alibaba to get custom satin cord, president’s braid, and/or just shoelace cord on a spool. There is, of course, the fear of doing business with Google Translate as an intermediary, and also the fear of minimums required for custom manufacturing…
niiice,
bookmarked
and i have a rope dealer locally 
they braid from imported yarns