In Don's defence it will have looked whiter than white under the store lights and in isolation form other white things. I know: I have lots of white things that are all the same until they are put next to each other or something else that is white.
For further information. Men only see six colours: Red, Blue, Green, Yellow, Black and White. There is no such colour as lime green - it's yellow, and purple is blue unless it is red enough to be red.
But back to the pot. Bargain Kaz! Sis has the one mum got donkey's ago. It was "raw" cast iron when new, but now it has turned itself into the non-stickiest of non-stick pots.