So I checked the local market and while metallic grey is the most popular here in Ireland, white is fifth, compared to its clear first place when I've been to California. White is established in popular culture as the colour of transit vans and small traders, which isn't an image that inspires demand in personal vehicles. I think in recent years, Tesla marketing has rehabilated the image of white cars a little, but I don't see them getting US levels of use in the near future, especially as there aren't actually that many Tesla's being sold here.

So I think there's some level of marketers adapting to at least what they think works in the market rather than simple volume discounts on white paint.