Farm eggs... there's a reason I posted this, because for many years we've been unable to get white eggs in the uk, unless buying directly from a farm. People decades ago got it into their heads that brown eggs were healthier, so white hens eggs were just not sold to the public, instead they were produced for the hospitality trade.
Now since the pandemic shortage of eggs, supermarkets have now decided to stock white eggs again, and there's a whole generation who have never even seen a white shelled egg.
However I get mine from the farm shop, and get a mix, sometimes there's even a blue shelled one in there..