I mean you can just run gold t-shirt foil through a plotter and get pretty much that exact effect. It’d still be a massive pain in the arse to get the waste removed and the pattern applied, but nothing that’s outside the realm of capability for cosplayers.
I love that SNW kept that detail in the uniform (startrek.website)
Totally get why it’s infuriating but it does look pretty cool. Especially when it’s so subtle you don’t notice it easily without a closeup.