How many other "(Color) Collar" job terms are there?

We’ve all heard the terms “White Collar” and “Blue Collar” used to describe fields of employment, but I was wondering how many other, lesser known, “(Color) Collar” terms there are? My mother once heard the term “Pink Collar” used to describe secretarial-type jobs, due to the perception that most employees in that field were women (This was about 25 years ago.) But has anyone else heard of any other “Collar” terms?
Well, Thanks for your patience,

Redneck is quite similar to blue collar. Does that count?

Roman collar (Priests).

Steel collar = robots

black = religious
pink = sexual (at least in Japan)

Yellow collar = the great unwashed.


The only one that seems to be in regular use is pink collar, although I’ve heard black collar a few times.


I’ve heard open collar to describe tech workers.

First-time collar–talk radio jobs.

Stand-up collar–Elvis impersonators

Rhinestone collar–Dog groomers