It's all about popular trends tbh, like how white seem to have 'come into fashion' recently.They look awful imho.
Sunflower wasn't a cost option and it wasn't a limited edition. The only reason they are rare is because no one wanted one. And now, because there are so few of them, people find the colour attractive!
If you look it objectively the Ph1 172 looks s**t in yellow. It looks far better in silver.
Fait point mate.
Although I'd question if yellow cars have ever really been in fashion lol