I did accidentally pump 2-3 gallons of red dyed diesel in Kansas one time. That was the first time I ever ran across such a pump, so I wasn't even looking. I think I just saw "diesel". I stopped pumping immediately after I looked up at the signage saying exactly what kind. I had to pull forward to a green pump to finish filling.
There's one pump in Hill City, if you remember that town, that I quit going to. There's a pump that pumps out non taxable diesel. It's easy for me to use that one how I pull in there. I always have to fight with the pumps to get them to take my card and then, after I'm already extremely frustrated, it takes my card and gives me a message that I'm not authorized to use that pump so I get fed up and go up the road to the other station where diesel is $.15 or so higher per gallon because I absolutely refuse to turn around at and use the other pump by this time. It's just much less of a headache to pay for the higher priced fuel in the first place.
I asked why they didn't change the color of the pump handles and she said corporate would not let them.
That does make sense. Since the company is "British Petroleum" and diesel pump handles aren't green in the eastern hemisphere from, what I've seen, I can understand this. The diesel pumps are probably yellow. It's been decades since I've stopped at a BP station and I wasn't impressed enough to go back to one.