Lets see.

Green just tonight. Had a weird light kit, so I triple looked

Before that, last I was out of the house was..... Friday? Thursday? Anyway, a yellow mustang was in the line at the drugstore.

Haven't seen purple in ages. Orange? I wanna say a few months ago. Old vw beetle.

Pink? Last time I saw that was maybe ten, fifteen years ago. Somewhere in that range. It stuck in memory because it was a lifted pickup.

That's on the road though. As in I was out driving and they were either doing the same, parked at a business or home, or at a car sales place. I don't think car shows count, otherwise I would say I've seen every damn color out there a few months ago driving past one.

Truth is that factory paint colors are picked by what sells. And most people don't want yellow and orange. Purple, I'm kinda surprised it isn't an option more often