Nope, unmarked or subdued colors don't change the fact that if the fucker in a Chevy didn't swerve in front to break check me they wouldn't have been pulled over.
We go by miles in my house. But conduct does differ between city, county, state, and department. Your problem seems to be an issue with the politicians, though.
my place wrote fixed minimal revenue from tickets into state budget, in other words it the police extort fixed amount of money - gonna have a bad time - whenever was people that bad, or not. (or worse, - jail does not count, only money). other places like london have it own, yet still vile way.
We have plain clothes coppers in Australia too, but they definitely don’t have that bullshit barely visible thing, just a sticker on the bottom of their front doors
Oh wait...